text: /*!
   * jQuery Validation Plugin v1.19.1
   *
   * https://jqueryvalidation.org/
   *
   * Copyright (c) 2019 Jörn Zaefferer
   * Released under the MIT license
   */
  (function (factory) {
      if (typeof define === "function" && define.amd) {
          define(["jquery"], factory);
      } else if (typeof module === "object" && module.exports) {
          module.exports = factory(require("jquery"));
      } else {
          factory(jQuery);
      }
  }(function ($) {
  
      $.extend($.fn, {
  
          // https://jqueryvalidation.org/validate/
          validate: function (options) {
  
              // If nothing is selected, return nothing; can't chain anyway
              if (!this.length) {
                  if (options && options.debug && window.console) {
                      console.warn("Nothing selected, can't validate, returning nothing.");
                  }
                  return;
              }
  
              // Check if a validator for this form was already created
              var validator = $.data(this[0], "validator");
              if (validator) {
                  return validator;
              }
  
              // Add novalidate tag if HTML5.
              this.attr("novalidate", "novalidate");
  
              validator = new $.validator(options, this[0]);
              $.data(this[0], "validator", validator);
  
              if (validator.settings.onsubmit) {
  
                  this.on("click.validate", ":submit", function (event) {
  
                      // Track the used submit button to properly handle scripted
                      // submits later.
                      validator.submitButton = event.currentTarget;
  
                      // Allow suppressing validation by adding a cancel class to the submit button
                      if ($(this).hasClass("cancel")) {
                          validator.cancelSubmit = true;
                      }
  
                      // Allow suppressing validation by adding the html5 formnovalidate attribute to the submit button
                      if ($(this).attr("formnovalidate") !== undefined) {
                          validator.cancelSubmit = true;
                      }
                  });
  
                  // Validate the form on submit
                  this.on("submit.validate", function (event) {
                      if (validator.settings.debug) {
  
                          // Prevent form submit to be able to see console output
                          event.preventDefault();
                      }
  
                      function handle() {
                          var hidden, result;
  
                          // Insert a hidden input as a replacement for the missing submit button
                          // The hidden input is inserted in two cases:
                          //   - A user defined a `submitHandler`
                          //   - There was a pending request due to `remote` method and `stopRequest()`
                          //     was called to submit the form in case it's valid
                          if (validator.submitButton && (validator.settings.submitHandler || validator.formSubmitted)) {
                              hidden = $("<input type='hidden'/>")
                                  .attr("name", validator.submitButton.name)
                                  .val($(validator.submitButton).val())
                                  .appendTo(validator.currentForm);
                          }
  
                          if (validator.settings.submitHandler && !validator.settings.debug) {
                              result = validator.settings.submitHandler.call(validator, validator.currentForm, event);
                              if (hidden) {
  
                                  // And clean up afterwards; thanks to no-block-scope, hidden can be referenced
                                  hidden.remove();
                              }
                              if (result !== undefined) {
                                  return result;
                              }
                              return false;
                          }
                          return true;
                      }
  
                      // Prevent submit for invalid forms or custom submit handlers
                      if (validator.cancelSubmit) {
                          validator.cancelSubmit = false;
                          return handle();
                      }
                      if (validator.form()) {
                          if (validator.pendingRequest) {
                              validator.formSubmitted = true;
                              return false;
                          }
                          return handle();
                      } else {
                          validator.focusInvalid();
                          return false;
                      }
                  });
              }
  
              return validator;
          },
  
          // https://jqueryvalidation.org/valid/
          valid: function () {
              var valid, validator, errorList;
  
              if ($(this[0]).is("form")) {
                  valid = this.validate().form();
              } else {
                  errorList = [];
                  valid = true;
                  validator = $(this[0].form).validate();
                  this.each(function () {
                      valid = validator.element(this) && valid;
                      if (!valid) {
                          errorList = errorList.concat(validator.errorList);
                      }
                  });
                  validator.errorList = errorList;
              }
              return valid;
          },
  
          // https://jqueryvalidation.org/rules/
          rules: function (command, argument) {
              var element = this[0],
                  isContentEditable = typeof this.attr("contenteditable") !== "undefined" && this.attr("contenteditable") !== "false",
                  settings, staticRules, existingRules, data, param, filtered;
  
              // If nothing is selected, return empty object; can't chain anyway
              if (element == null) {
                  return;
              }
  
              if (!element.form && isContentEditable) {
                  element.form = this.closest("form")[0];
                  element.name = this.attr("name");
              }
  
              if (element.form == null) {
                  return;
              }
  
              if (command) {
                  settings = $.data(element.form, "validator").settings;
                  staticRules = settings.rules;
                  existingRules = $.validator.staticRules(element);
                  switch (command) {
                      case "add":
                          $.extend(existingRules, $.validator.normalizeRule(argument));
  
                          // Remove messages from rules, but allow them to be set separately
                          delete existingRules.messages;
                          staticRules[element.name] = existingRules;
                          if (argument.messages) {
                              settings.messages[element.name] = $.extend(settings.messages[element.name], argument.messages);
                          }
                          break;
                      case "remove":
                          if (!argument) {
                              delete staticRules[element.name];
                              return existingRules;
                          }
                          filtered = {};
                          $.each(argument.split(/\s/), function (index, method) {
                              filtered[method] = existingRules[method];
                              delete existingRules[method];
                          });
                          return filtered;
                  }
              }
  
              data = $.validator.normalizeRules(
                  $.extend(
                      {},
                      $.validator.classRules(element),
                      $.validator.attributeRules(element),
                      $.validator.dataRules(element),
                      $.validator.staticRules(element)
                  ), element);
  
              // Make sure required is at front
              if (data.required) {
                  param = data.required;
                  delete data.required;
                  data = $.extend({required: param}, data);
              }
  
              // Make sure remote is at back
              if (data.remote) {
                  param = data.remote;
                  delete data.remote;
                  data = $.extend(data, {remote: param});
              }
  
              return data;
          }
      });
  
  // Custom selectors
      $.extend($.expr.pseudos || $.expr[":"], {		// '|| $.expr[ ":" ]' here enables backwards compatibility to jQuery 1.7. Can be removed when dropping jQ 1.7.x support
  
          // https://jqueryvalidation.org/blank-selector/
          blank: function (a) {
              return !$.trim("" + $(a).val());
          },
  
          // https://jqueryvalidation.org/filled-selector/
          filled: function (a) {
              var val = $(a).val();
              return val !== null && !!$.trim("" + val);
          },
  
          // https://jqueryvalidation.org/unchecked-selector/
          unchecked: function (a) {
              return !$(a).prop("checked");
          }
      });
  
  // Constructor for validator
      $.validator = function (options, form) {
          this.settings = $.extend(true, {}, $.validator.defaults, options);
          this.currentForm = form;
          this.init();
      };
  
  // https://jqueryvalidation.org/jQuery.validator.format/
      $.validator.format = function (source, params) {
          if (arguments.length === 1) {
              return function () {
                  var args = $.makeArray(arguments);
                  args.unshift(source);
                  return $.validator.format.apply(this, args);
              };
          }
          if (params === undefined) {
              return source;
          }
          if (arguments.length > 2 && params.constructor !== Array) {
              params = $.makeArray(arguments).slice(1);
          }
          if (params.constructor !== Array) {
              params = [params];
          }
          $.each(params, function (i, n) {
              source = source.replace(new RegExp("\\{" + i + "\\}", "g"), function () {
                  return n;
              });
          });
          return source;
      };
  
      $.extend($.validator, {
  
          defaults: {
              messages: {},
              groups: {},
              rules: {},
              errorClass: "error",
              pendingClass: "pending",
              validClass: "valid",
              errorElement: "label",
              focusCleanup: false,
              focusInvalid: true,
              errorContainer: $([]),
              errorLabelContainer: $([]),
              onsubmit: true,
              ignore: ":hidden",
              ignoreTitle: false,
              onfocusin: function (element) {
                  this.lastActive = element;
  
                  // Hide error label and remove error class on focus if enabled
                  if (this.settings.focusCleanup) {
                      if (this.settings.unhighlight) {
                          this.settings.unhighlight.call(this, element, this.settings.errorClass, this.settings.validClass);
                      }
                      this.hideThese(this.errorsFor(element));
                  }
              },
              onfocusout: function (element) {
                  if (!this.checkable(element) && (element.name in this.submitted || !this.optional(element))) {
                      this.element(element);
                  }
              },
              onkeyup: function (element, event) {
  
                  // Avoid revalidate the field when pressing one of the following keys
                  // Shift       => 16
                  // Ctrl        => 17
                  // Alt         => 18
                  // Caps lock   => 20
                  // End         => 35
                  // Home        => 36
                  // Left arrow  => 37
                  // Up arrow    => 38
                  // Right arrow => 39
                  // Down arrow  => 40
                  // Insert      => 45
                  // Num lock    => 144
                  // AltGr key   => 225
                  var excludedKeys = [
                      16, 17, 18, 20, 35, 36, 37,
                      38, 39, 40, 45, 144, 225
                  ];
  
                  if (event.which === 9 && this.elementValue(element) === "" || $.inArray(event.keyCode, excludedKeys) !== -1) {
                      return;
                  } else if (element.name in this.submitted || element.name in this.invalid) {
                      this.element(element);
                  }
              },
              onclick: function (element) {
  
                  // Click on selects, radiobuttons and checkboxes
                  if (element.name in this.submitted) {
                      this.element(element);
  
                      // Or option elements, check parent select in that case
                  } else if (element.parentNode.name in this.submitted) {
                      this.element(element.parentNode);
                  }
              },
              highlight: function (element, errorClass, validClass) {
                  if (element.type === "radio") {
                      this.findByName(element.name).addClass(errorClass).removeClass(validClass);
                  } else {
                      $(element).addClass(errorClass).removeClass(validClass);
                  }
              },
              unhighlight: function (element, errorClass, validClass) {
                  if (element.type === "radio") {
                      this.findByName(element.name).removeClass(errorClass).addClass(validClass);
                  } else {
                      $(element).removeClass(errorClass).addClass(validClass);
                  }
              }
          },
  
          // https://jqueryvalidation.org/jQuery.validator.setDefaults/
          setDefaults: function (settings) {
              $.extend($.validator.defaults, settings);
          },
  
          messages: {
              required: "This field is required.",
              remote: "Please fix this field.",
              email: "Please enter a valid email address.",
              url: "Please enter a valid URL.",
              date: "Please enter a valid date.",
              dateISO: "Please enter a valid date (ISO).",
              number: "Please enter a valid number.",
              digits: "Please enter only digits.",
              equalTo: "Please enter the same value again.",
              maxlength: $.validator.format("Please enter no more than {0} characters."),
              minlength: $.validator.format("Please enter at least {0} characters."),
              rangelength: $.validator.format("Please enter a value between {0} and {1} characters long."),
              range: $.validator.format("Please enter a value between {0} and {1}."),
              max: $.validator.format("Please enter a value less than or equal to {0}."),
              min: $.validator.format("Please enter a value greater than or equal to {0}."),
              step: $.validator.format("Please enter a multiple of {0}.")
          },
  
          autoCreateRanges: false,
  
          prototype: {
  
              init: function () {
                  this.labelContainer = $(this.settings.errorLabelContainer);
                  this.errorContext = this.labelContainer.length && this.labelContainer || $(this.currentForm);
                  this.containers = $(this.settings.errorContainer).add(this.settings.errorLabelContainer);
                  this.submitted = {};
                  this.valueCache = {};
                  this.pendingRequest = 0;
                  this.pending = {};
                  this.invalid = {};
                  this.reset();
  
                  var currentForm = this.currentForm,
                      groups = (this.groups = {}),
                      rules;
                  $.each(this.settings.groups, function (key, value) {
                      if (typeof value === "string") {
                          value = value.split(/\s/);
                      }
                      $.each(value, function (index, name) {
                          groups[name] = key;
                      });
                  });
                  rules = this.settings.rules;
                  $.each(rules, function (key, value) {
                      rules[key] = $.validator.normalizeRule(value);
                  });
  
                  function delegate(event) {
                      var isContentEditable = typeof $(this).attr("contenteditable") !== "undefined" && $(this).attr("contenteditable") !== "false";
  
                      // Set form expando on contenteditable
                      if (!this.form && isContentEditable) {
                          this.form = $(this).closest("form")[0];
                          this.name = $(this).attr("name");
                      }
  
                      // Ignore the element if it belongs to another form. This will happen mainly
                      // when setting the `form` attribute of an input to the id of another form.
                      if (currentForm !== this.form) {
                          return;
                      }
  
                      var validator = $.data(this.form, "validator"),
                          eventType = "on" + event.type.replace(/^validate/, ""),
                          settings = validator.settings;
                      if (settings[eventType] && !$(this).is(settings.ignore)) {
                          settings[eventType].call(validator, this, event);
                      }
                  }
  
                  $(this.currentForm)
                      .on("focusin.validate focusout.validate keyup.validate",
                          ":text, [type='password'], [type='file'], select, textarea, [type='number'], [type='search'], " +
                          "[type='tel'], [type='url'], [type='email'], [type='datetime'], [type='date'], [type='month'], " +
                          "[type='week'], [type='time'], [type='datetime-local'], [type='range'], [type='color'], " +
                          "[type='radio'], [type='checkbox'], [contenteditable], [type='button']", delegate)
  
                      // Support: Chrome, oldIE
                      // "select" is provided as event.target when clicking a option
                      .on("click.validate", "select, option, [type='radio'], [type='checkbox']", delegate);
  
                  if (this.settings.invalidHandler) {
                      $(this.currentForm).on("invalid-form.validate", this.settings.invalidHandler);
                  }
              },
  
              // https://jqueryvalidation.org/Validator.form/
              form: function () {
                  this.checkForm();
                  $.extend(this.submitted, this.errorMap);
                  this.invalid = $.extend({}, this.errorMap);
                  if (!this.valid()) {
                      $(this.currentForm).triggerHandler("invalid-form", [this]);
                  }
                  this.showErrors();
                  return this.valid();
              },
  
              checkForm: function () {
                  this.prepareForm();
                  // for ( var i = 0, elements = ( this.currentElements = this.elements() ); elements[ i ]; i++ ) {
                  // 	this.check( elements[ i ] );
                  // }
                  // return this.valid();
                  for (var i = 0, elements = (this.currentElements = this.elements()); elements[i]; i++) {
                      if (this.findByName(elements[i].name).length != undefined && this.findByName(elements[i].name).length > 1) {
                          for (var cnt = 0; cnt < this.findByName(elements[i].name).length; cnt++) {
                              this.check(this.findByName(elements[i].name)[cnt]);
                          }
                      } else {
                          this.check(elements[i]);
                      }
                  }
                  return this.valid();
              },
  
              // https://jqueryvalidation.org/Validator.element/
              element: function (element) {
                  var cleanElement = this.clean(element),
                      checkElement = this.validationTargetFor(cleanElement),
                      v = this,
                      result = true,
                      rs, group;
  
                  if (checkElement === undefined) {
                      delete this.invalid[cleanElement.name];
                  } else {
                      this.prepareElement(checkElement);
                      this.currentElements = $(checkElement);
  
                      // If this element is grouped, then validate all group elements already
                      // containing a value
                      group = this.groups[checkElement.name];
                      if (group) {
                          $.each(this.groups, function (name, testgroup) {
                              if (testgroup === group && name !== checkElement.name) {
                                  cleanElement = v.validationTargetFor(v.clean(v.findByName(name)));
                                  if (cleanElement && cleanElement.name in v.invalid) {
                                      v.currentElements.push(cleanElement);
                                      result = v.check(cleanElement) && result;
                                  }
                              }
                          });
                      }
  
                      rs = this.check(checkElement) !== false;
                      result = result && rs;
                      if (rs) {
                          this.invalid[checkElement.name] = false;
                      } else {
                          this.invalid[checkElement.name] = true;
                      }
  
                      if (!this.numberOfInvalids()) {
  
                          // Hide error containers on last error
                          this.toHide = this.toHide.add(this.containers);
                      }
                      this.showErrors();
  
                      // Add aria-invalid status for screen readers
                      $(element).attr("aria-invalid", !rs);
                  }
  
                  return result;
              },
  
              // https://jqueryvalidation.org/Validator.showErrors/
              showErrors: function (errors) {
                  if (errors) {
                      var validator = this;
  
                      // Add items to error list and map
                      $.extend(this.errorMap, errors);
                      this.errorList = $.map(this.errorMap, function (message, name) {
                          return {
                              message: message,
                              element: validator.findByName(name)[0]
                          };
                      });
  
                      // Remove items from success list
                      this.successList = $.grep(this.successList, function (element) {
                          return !(element.name in errors);
                      });
                  }
                  if (this.settings.showErrors) {
                      this.settings.showErrors.call(this, this.errorMap, this.errorList);
                  } else {
                      this.defaultShowErrors();
                  }
              },
  
              // https://jqueryvalidation.org/Validator.resetForm/
              resetForm: function () {
                  if ($.fn.resetForm) {
                      $(this.currentForm).resetForm();
                  }
                  this.invalid = {};
                  this.submitted = {};
                  this.prepareForm();
                  this.hideErrors();
                  var elements = this.elements()
                      .removeData("previousValue")
                      .removeAttr("aria-invalid");
  
                  this.resetElements(elements);
              },
  
              resetElements: function (elements) {
                  var i;
  
                  if (this.settings.unhighlight) {
                      for (i = 0; elements[i]; i++) {
                          this.settings.unhighlight.call(this, elements[i],
                              this.settings.errorClass, "");
                          this.findByName(elements[i].name).removeClass(this.settings.validClass);
                      }
                  } else {
                      elements
                          .removeClass(this.settings.errorClass)
                          .removeClass(this.settings.validClass);
                  }
              },
  
              numberOfInvalids: function () {
                  return this.objectLength(this.invalid);
              },
  
              objectLength: function (obj) {
                  /* jshint unused: false */
                  var count = 0,
                      i;
                  for (i in obj) {
  
                      // This check allows counting elements with empty error
                      // message as invalid elements
                      if (obj[i] !== undefined && obj[i] !== null && obj[i] !== false) {
                          count++;
                      }
                  }
                  return count;
              },
  
              hideErrors: function () {
                  this.hideThese(this.toHide);
              },
  
              hideThese: function (errors) {
                  errors.not(this.containers).text("");
                  this.addWrapper(errors).hide();
              },
  
              valid: function () {
                  return this.size() === 0;
              },
  
              size: function () {
                  return this.errorList.length;
              },
  
              focusInvalid: function () {
                  if (this.settings.focusInvalid) {
                      try {
                          $(this.findLastActive() || this.errorList.length && this.errorList[0].element || [])
                              .filter(":visible")
                              .trigger("focus")
  
                              // Manually trigger focusin event; without it, focusin handler isn't called, findLastActive won't have anything to find
                              .trigger("focusin");
                      } catch (e) {
  
                          // Ignore IE throwing errors when focusing hidden elements
                      }
                  }
              },
  
              findLastActive: function () {
                  var lastActive = this.lastActive;
                  return lastActive && $.grep(this.errorList, function (n) {
                      return n.element.name === lastActive.name;
                  }).length === 1 && lastActive;
              },
  
              elements: function () {
                  var validator = this,
                      rulesCache = {};
  
                  // Select all valid inputs inside the form (no submit or reset buttons)
                  return $(this.currentForm)
                      .find("input, select, textarea, [contenteditable]")
                      .not(":submit, :reset, :image, :disabled")
                      .not(this.settings.ignore)
                      .filter(function () {
                          var name = this.name || $(this).attr("name"); // For contenteditable
                          var isContentEditable = typeof $(this).attr("contenteditable") !== "undefined" && $(this).attr("contenteditable") !== "false";
  
                          if (!name && validator.settings.debug && window.console) {
                              console.error("%o has no name assigned", this);
                          }
  
                          // Set form expando on contenteditable
                          if (isContentEditable) {
                              this.form = $(this).closest("form")[0];
                              this.name = name;
                          }
  
                          // Ignore elements that belong to other/nested forms
                          if (this.form !== validator.currentForm) {
                              return false;
                          }
  
                          // Select only the first element for each name, and only those with rules specified
                          if (name in rulesCache || !validator.objectLength($(this).rules())) {
                              return false;
                          }
  
                          rulesCache[name] = true;
                          return true;
                      });
              },
  
              clean: function (selector) {
                  return $(selector)[0];
              },
  
              errors: function () {
                  var errorClass = this.settings.errorClass.split(" ").join(".");
                  return $(this.settings.errorElement + "." + errorClass, this.errorContext);
              },
  
              resetInternals: function () {
                  this.successList = [];
                  this.errorList = [];
                  this.errorMap = {};
                  this.toShow = $([]);
                  this.toHide = $([]);
              },
  
              reset: function () {
                  this.resetInternals();
                  this.currentElements = $([]);
              },
  
              prepareForm: function () {
                  this.reset();
                  this.toHide = this.errors().add(this.containers);
              },
  
              prepareElement: function (element) {
                  this.reset();
                  this.toHide = this.errorsFor(element);
              },
  
              elementValue: function (element) {
                  var $element = $(element),
                      type = element.type,
                      isContentEditable = typeof $element.attr("contenteditable") !== "undefined" && $element.attr("contenteditable") !== "false",
                      val, idx;
  
                  if (type === "radio" || type === "checkbox") {
                      return this.findByName(element.name).filter(":checked").val();
                  } else if (type === "number" && typeof element.validity !== "undefined") {
                      return element.validity.badInput ? "NaN" : $element.val();
                  }
  
                  if (isContentEditable) {
                      val = $element.text();
                  } else {
                      val = $element.val();
                  }
  
                  if (type === "file") {
  
                      // Modern browser (chrome & safari)
                      if (val.substr(0, 12) === "C:\\fakepath\\") {
                          return val.substr(12);
                      }
  
                      // Legacy browsers
                      // Unix-based path
                      idx = val.lastIndexOf("/");
                      if (idx >= 0) {
                          return val.substr(idx + 1);
                      }
  
                      // Windows-based path
                      idx = val.lastIndexOf("\\");
                      if (idx >= 0) {
                          return val.substr(idx + 1);
                      }
  
                      // Just the file name
                      return val;
                  }
  
                  if (typeof val === "string") {
                      return val.replace(/\r/g, "");
                  }
                  return val;
              },
  
              check: function (element) {
                  element = this.validationTargetFor(this.clean(element));
  
                  var rules = $(element).rules(),
                      rulesCount = $.map(rules, function (n, i) {
                          return i;
                      }).length,
                      dependencyMismatch = false,
                      val = this.elementValue(element),
                      result, method, rule, normalizer;
  
                  // Prioritize the local normalizer defined for this element over the global one
                  // if the former exists, otherwise user the global one in case it exists.
                  if (typeof rules.normalizer === "function") {
                      normalizer = rules.normalizer;
                  } else if (typeof this.settings.normalizer === "function") {
                      normalizer = this.settings.normalizer;
                  }
  
                  // If normalizer is defined, then call it to retreive the changed value instead
                  // of using the real one.
                  // Note that `this` in the normalizer is `element`.
                  if (normalizer) {
                      val = normalizer.call(element, val);
  
                      // Delete the normalizer from rules to avoid treating it as a pre-defined method.
                      delete rules.normalizer;
                  }
  
                  for (method in rules) {
                      rule = {method: method, parameters: rules[method]};
                      try {
                          result = $.validator.methods[method].call(this, val, element, rule.parameters);
  
                          // If a method indicates that the field is optional and therefore valid,
                          // don't mark it as valid when there are no other rules
                          if (result === "dependency-mismatch" && rulesCount === 1) {
                              dependencyMismatch = true;
                              continue;
                          }
                          dependencyMismatch = false;
  
                          if (result === "pending") {
                              this.toHide = this.toHide.not(this.errorsFor(element));
                              return;
                          }
  
                          if (!result) {
                              this.formatAndAdd(element, rule);
                              return false;
                          }
                      } catch (e) {
                          if (this.settings.debug && window.console) {
                              console.log("Exception occurred when checking element " + element.id + ", check the '" + rule.method + "' method.", e);
                          }
                          if (e instanceof TypeError) {
                              e.message += ".  Exception occurred when checking element " + element.id + ", check the '" + rule.method + "' method.";
                          }
  
                          throw e;
                      }
                  }
                  if (dependencyMismatch) {
                      return;
                  }
                  if (this.objectLength(rules)) {
                      this.successList.push(element);
                  }
                  return true;
              },
  
              // Return the custom message for the given element and validation method
              // specified in the element's HTML5 data attribute
              // return the generic message if present and no method specific message is present
              customDataMessage: function (element, method) {
                  return $(element).data("msg" + method.charAt(0).toUpperCase() +
                      method.substring(1).toLowerCase()) || $(element).data("msg");
              },
  
              // Return the custom message for the given element name and validation method
              customMessage: function (name, method) {
                  var m = this.settings.messages[name];
                  return m && (m.constructor === String ? m : m[method]);
              },
  
              // Return the first defined argument, allowing empty strings
              findDefined: function () {
                  for (var i = 0; i < arguments.length; i++) {
                      if (arguments[i] !== undefined) {
                          return arguments[i];
                      }
                  }
                  return undefined;
              },
  
              // The second parameter 'rule' used to be a string, and extended to an object literal
              // of the following form:
              // rule = {
              //     method: "method name",
              //     parameters: "the given method parameters"
              // }
              //
              // The old behavior still supported, kept to maintain backward compatibility with
              // old code, and will be removed in the next major release.
              defaultMessage: function (element, rule) {
                  if (typeof rule === "string") {
                      rule = {method: rule};
                  }
  
                  var message = this.findDefined(
                      this.customMessage(element.name, rule.method),
                      this.customDataMessage(element, rule.method),
  
                      // 'title' is never undefined, so handle empty string as undefined
                      !this.settings.ignoreTitle && element.title || undefined,
                      $.validator.messages[rule.method],
                      "<strong>Warning: No message defined for " + element.name + "</strong>"
                      ),
                      theregex = /\$?\{(\d+)\}/g;
                  if (typeof message === "function") {
                      message = message.call(this, rule.parameters, element);
                  } else if (theregex.test(message)) {
                      message = $.validator.format(message.replace(theregex, "{$1}"), rule.parameters);
                  }
  
                  return message;
              },
  
              formatAndAdd: function (element, rule) {
                  var message = this.defaultMessage(element, rule);
  
                  this.errorList.push({
                      message: message,
                      element: element,
                      method: rule.method
                  });
  
                  this.errorMap[element.name] = message;
                  this.submitted[element.name] = message;
              },
  
              addWrapper: function (toToggle) {
                  if (this.settings.wrapper) {
                      toToggle = toToggle.add(toToggle.parent(this.settings.wrapper));
                  }
                  return toToggle;
              },
  
              defaultShowErrors: function () {
                  var i, elements, error;
                  for (i = 0; this.errorList[i]; i++) {
                      error = this.errorList[i];
                      if (this.settings.highlight) {
                          this.settings.highlight.call(this, error.element, this.settings.errorClass, this.settings.validClass);
                      }
                      this.showLabel(error.element, error.message);
                  }
                  if (this.errorList.length) {
                      this.toShow = this.toShow.add(this.containers);
                  }
                  if (this.settings.success) {
                      for (i = 0; this.successList[i]; i++) {
                          this.showLabel(this.successList[i]);
                      }
                  }
                  if (this.settings.unhighlight) {
                      for (i = 0, elements = this.validElements(); elements[i]; i++) {
                          this.settings.unhighlight.call(this, elements[i], this.settings.errorClass, this.settings.validClass);
                      }
                  }
                  this.toHide = this.toHide.not(this.toShow);
                  this.hideErrors();
                  this.addWrapper(this.toShow).show();
              },
  
              validElements: function () {
                  return this.currentElements.not(this.invalidElements());
              },
  
              invalidElements: function () {
                  return $(this.errorList).map(function () {
                      return this.element;
                  });
              },
  
              showLabel: function (element, message) {
                  var place, group, errorID, v,
                      error = this.errorsFor(element),
                      elementID = this.idOrName(element),
                      describedBy = $(element).attr("aria-describedby");
  
                  if (error.length) {
  
                      // Refresh error/success class
                      error.removeClass(this.settings.validClass).addClass(this.settings.errorClass);
  
                      // Replace message on existing label
                      error.html(message);
                  } else {
  
                      // Create error element
                      error = $("<" + this.settings.errorElement + ">")
                          .attr("id", elementID + "-error")
                          .addClass(this.settings.errorClass)
                          .html(message || "");
  
                      // Maintain reference to the element to be placed into the DOM
                      place = error;
                      if (this.settings.wrapper) {
  
                          // Make sure the element is visible, even in IE
                          // actually showing the wrapped element is handled elsewhere
                          place = error.hide().show().wrap("<" + this.settings.wrapper + "/>").parent();
                      }
                      if (this.labelContainer.length) {
                          this.labelContainer.append(place);
                      } else if (this.settings.errorPlacement) {
                          this.settings.errorPlacement.call(this, place, $(element));
                      } else {
                          place.insertAfter(element);
                      }
  
                      // Link error back to the element
                      if (error.is("label")) {
  
                          // If the error is a label, then associate using 'for'
                          error.attr("for", elementID);
  
                          // If the element is not a child of an associated label, then it's necessary
                          // to explicitly apply aria-describedby
                      } else if (error.parents("label[for='" + this.escapeCssMeta(elementID) + "']").length === 0) {
                          errorID = error.attr("id");
  
                          // Respect existing non-error aria-describedby
                          if (!describedBy) {
                              describedBy = errorID;
                          } else if (!describedBy.match(new RegExp("\\b" + this.escapeCssMeta(errorID) + "\\b"))) {
  
                              // Add to end of list if not already present
                              describedBy += " " + errorID;
                          }
                          $(element).attr("aria-describedby", describedBy);
  
                          // If this element is grouped, then assign to all elements in the same group
                          group = this.groups[element.name];
                          if (group) {
                              v = this;
                              $.each(v.groups, function (name, testgroup) {
                                  if (testgroup === group) {
                                      $("[name='" + v.escapeCssMeta(name) + "']", v.currentForm)
                                          .attr("aria-describedby", error.attr("id"));
                                  }
                              });
                          }
                      }
                  }
                  if (!message && this.settings.success) {
                      error.text("");
                      if (typeof this.settings.success === "string") {
                          error.addClass(this.settings.success);
                      } else {
                          this.settings.success(error, element);
                      }
                  }
                  this.toShow = this.toShow.add(error);
              },
  
              errorsFor: function (element) {
                  var name = this.escapeCssMeta(this.idOrName(element)),
                      describer = $(element).attr("aria-describedby"),
                      selector = "label[for='" + name + "'], label[for='" + name + "'] *";
  
                  // 'aria-describedby' should directly reference the error element
                  if (describer) {
                      selector = selector + ", #" + this.escapeCssMeta(describer)
                          .replace(/\s+/g, ", #");
                  }
  
                  return this
                      .errors()
                      .filter(selector);
              },
  
              // See https://api.jquery.com/category/selectors/, for CSS
              // meta-characters that should be escaped in order to be used with JQuery
              // as a literal part of a name/id or any selector.
              escapeCssMeta: function (string) {
                  return string.replace(/([\\!"#$%&'()*+,./:;<=>?@\[\]^`{|}~])/g, "\\$1");
              },
  
              idOrName: function (element) {
                  return this.groups[element.name] || (this.checkable(element) ? element.name : element.id || element.name);
              },
  
              validationTargetFor: function (element) {
  
                  // If radio/checkbox, validate first element in group instead
                  if (this.checkable(element)) {
                      element = this.findByName(element.name);
                  }
  
                  // Always apply ignore filter
                  return $(element).not(this.settings.ignore)[0];
              },
  
              checkable: function (element) {
                  return (/radio|checkbox/i).test(element.type);
              },
  
              findByName: function (name) {
                  return $(this.currentForm).find("[name='" + this.escapeCssMeta(name) + "']");
              },
  
              getLength: function (value, element) {
                  switch (element.nodeName.toLowerCase()) {
                      case "select":
                          return $("option:selected", element).length;
                      case "input":
                          if (this.checkable(element)) {
                              return this.findByName(element.name).filter(":checked").length;
                          }
                  }
                  return value.length;
              },
  
              depend: function (param, element) {
                  return this.dependTypes[typeof param] ? this.dependTypes[typeof param](param, element) : true;
              },
  
              dependTypes: {
                  "boolean": function (param) {
                      return param;
                  },
                  "string": function (param, element) {
                      return !!$(param, element.form).length;
                  },
                  "function": function (param, element) {
                      return param(element);
                  }
              },
  
              optional: function (element) {
                  var val = this.elementValue(element);
                  return !$.validator.methods.required.call(this, val, element) && "dependency-mismatch";
              },
  
              startRequest: function (element) {
                  if (!this.pending[element.name]) {
                      this.pendingRequest++;
                      $(element).addClass(this.settings.pendingClass);
                      this.pending[element.name] = true;
                  }
              },
  
              stopRequest: function (element, valid) {
                  this.pendingRequest--;
  
                  // Sometimes synchronization fails, make sure pendingRequest is never < 0
                  if (this.pendingRequest < 0) {
                      this.pendingRequest = 0;
                  }
                  delete this.pending[element.name];
                  $(element).removeClass(this.settings.pendingClass);
                  if (valid && this.pendingRequest === 0 && this.formSubmitted && this.form()) {
                      $(this.currentForm).submit();
  
                      // Remove the hidden input that was used as a replacement for the
                      // missing submit button. The hidden input is added by `handle()`
                      // to ensure that the value of the used submit button is passed on
                      // for scripted submits triggered by this method
                      if (this.submitButton) {
                          $("input:hidden[name='" + this.submitButton.name + "']", this.currentForm).remove();
                      }
  
                      this.formSubmitted = false;
                  } else if (!valid && this.pendingRequest === 0 && this.formSubmitted) {
                      $(this.currentForm).triggerHandler("invalid-form", [this]);
                      this.formSubmitted = false;
                  }
              },
  
              previousValue: function (element, method) {
                  method = typeof method === "string" && method || "remote";
  
                  return $.data(element, "previousValue") || $.data(element, "previousValue", {
                      old: null,
                      valid: true,
                      message: this.defaultMessage(element, {method: method})
                  });
              },
  
              // Cleans up all forms and elements, removes validator-specific events
              destroy: function () {
                  this.resetForm();
  
                  $(this.currentForm)
                      .off(".validate")
                      .removeData("validator")
                      .find(".validate-equalTo-blur")
                      .off(".validate-equalTo")
                      .removeClass("validate-equalTo-blur")
                      .find(".validate-lessThan-blur")
                      .off(".validate-lessThan")
                      .removeClass("validate-lessThan-blur")
                      .find(".validate-lessThanEqual-blur")
                      .off(".validate-lessThanEqual")
                      .removeClass("validate-lessThanEqual-blur")
                      .find(".validate-greaterThanEqual-blur")
                      .off(".validate-greaterThanEqual")
                      .removeClass("validate-greaterThanEqual-blur")
                      .find(".validate-greaterThan-blur")
                      .off(".validate-greaterThan")
                      .removeClass("validate-greaterThan-blur");
              }
  
          },
  
          classRuleSettings: {
              required: {required: true},
              email: {email: true},
              url: {url: true},
              date: {date: true},
              dateISO: {dateISO: true},
              number: {number: true},
              digits: {digits: true},
              creditcard: {creditcard: true}
          },
  
          addClassRules: function (className, rules) {
              if (className.constructor === String) {
                  this.classRuleSettings[className] = rules;
              } else {
                  $.extend(this.classRuleSettings, className);
              }
          },
  
          classRules: function (element) {
              var rules = {},
                  classes = $(element).attr("class");
  
              if (classes) {
                  $.each(classes.split(" "), function () {
                      if (this in $.validator.classRuleSettings) {
                          $.extend(rules, $.validator.classRuleSettings[this]);
                      }
                  });
              }
              return rules;
          },
  
          normalizeAttributeRule: function (rules, type, method, value) {
  
              // Convert the value to a number for number inputs, and for text for backwards compability
              // allows type="date" and others to be compared as strings
              if (/min|max|step/.test(method) && (type === null || /number|range|text/.test(type))) {
                  value = Number(value);
  
                  // Support Opera Mini, which returns NaN for undefined minlength
                  if (isNaN(value)) {
                      value = undefined;
                  }
              }
  
              if (value || value === 0) {
                  rules[method] = value;
              } else if (type === method && type !== "range") {
  
                  // Exception: the jquery validate 'range' method
                  // does not test for the html5 'range' type
                  rules[method] = true;
              }
          },
  
          attributeRules: function (element) {
              var rules = {},
                  $element = $(element),
                  type = element.getAttribute("type"),
                  method, value;
  
              for (method in $.validator.methods) {
  
                  // Support for <input required> in both html5 and older browsers
                  if (method === "required") {
                      value = element.getAttribute(method);
  
                      // Some browsers return an empty string for the required attribute
                      // and non-HTML5 browsers might have required="" markup
                      if (value === "") {
                          value = true;
                      }
  
                      // Force non-HTML5 browsers to return bool
                      value = !!value;
                  } else {
                      value = $element.attr(method);
                  }
  
                  this.normalizeAttributeRule(rules, type, method, value);
              }
  
              // 'maxlength' may be returned as -1, 2147483647 ( IE ) and 524288 ( safari ) for text inputs
              if (rules.maxlength && /-1|2147483647|524288/.test(rules.maxlength)) {
                  delete rules.maxlength;
              }
  
              return rules;
          },
  
          dataRules: function (element) {
              var rules = {},
                  $element = $(element),
                  type = element.getAttribute("type"),
                  method, value;
  
              for (method in $.validator.methods) {
                  value = $element.data("rule" + method.charAt(0).toUpperCase() + method.substring(1).toLowerCase());
  
                  // Cast empty attributes like `data-rule-required` to `true`
                  if (value === "") {
                      value = true;
                  }
  
                  this.normalizeAttributeRule(rules, type, method, value);
              }
              return rules;
          },
  
          staticRules: function (element) {
              var rules = {},
                  validator = $.data(element.form, "validator");
  
              if (validator.settings.rules) {
                  rules = $.validator.normalizeRule(validator.settings.rules[element.name]) || {};
              }
              return rules;
          },
  
          normalizeRules: function (rules, element) {
  
              // Handle dependency check
              $.each(rules, function (prop, val) {
  
                  // Ignore rule when param is explicitly false, eg. required:false
                  if (val === false) {
                      delete rules[prop];
                      return;
                  }
                  if (val.param || val.depends) {
                      var keepRule = true;
                      switch (typeof val.depends) {
                          case "string":
                              keepRule = !!$(val.depends, element.form).length;
                              break;
                          case "function":
                              keepRule = val.depends.call(element, element);
                              break;
                      }
                      if (keepRule) {
                          rules[prop] = val.param !== undefined ? val.param : true;
                      } else {
                          $.data(element.form, "validator").resetElements($(element));
                          delete rules[prop];
                      }
                  }
              });
  
              // Evaluate parameters
              $.each(rules, function (rule, parameter) {
                  rules[rule] = $.isFunction(parameter) && rule !== "normalizer" ? parameter(element) : parameter;
              });
  
              // Clean number parameters
              $.each(["minlength", "maxlength"], function () {
                  if (rules[this]) {
                      rules[this] = Number(rules[this]);
                  }
              });
              $.each(["rangelength", "range"], function () {
                  var parts;
                  if (rules[this]) {
                      if ($.isArray(rules[this])) {
                          rules[this] = [Number(rules[this][0]), Number(rules[this][1])];
                      } else if (typeof rules[this] === "string") {
                          parts = rules[this].replace(/[\[\]]/g, "").split(/[\s,]+/);
                          rules[this] = [Number(parts[0]), Number(parts[1])];
                      }
                  }
              });
  
              if ($.validator.autoCreateRanges) {
  
                  // Auto-create ranges
                  if (rules.min != null && rules.max != null) {
                      rules.range = [rules.min, rules.max];
                      delete rules.min;
                      delete rules.max;
                  }
                  if (rules.minlength != null && rules.maxlength != null) {
                      rules.rangelength = [rules.minlength, rules.maxlength];
                      delete rules.minlength;
                      delete rules.maxlength;
                  }
              }
  
              return rules;
          },
  
          // Converts a simple string to a {string: true} rule, e.g., "required" to {required:true}
          normalizeRule: function (data) {
              if (typeof data === "string") {
                  var transformed = {};
                  $.each(data.split(/\s/), function () {
                      transformed[this] = true;
                  });
                  data = transformed;
              }
              return data;
          },
  
          // https://jqueryvalidation.org/jQuery.validator.addMethod/
          addMethod: function (name, method, message) {
              $.validator.methods[name] = method;
              $.validator.messages[name] = message !== undefined ? message : $.validator.messages[name];
              if (method.length < 3) {
                  $.validator.addClassRules(name, $.validator.normalizeRule(name));
              }
          },
  
          // https://jqueryvalidation.org/jQuery.validator.methods/
          methods: {
  
              // https://jqueryvalidation.org/required-method/
              required: function (value, element, param) {
  
                  // Check if dependency is met
                  if (!this.depend(param, element)) {
                      return "dependency-mismatch";
                  }
                  if (element.nodeName.toLowerCase() === "select") {
  
                      // Could be an array for select-multiple or a string, both are fine this way
                      var val = $(element).val();
                      return val && val.length > 0;
                  }
                  if (this.checkable(element)) {
                      return this.getLength(value, element) > 0;
                  }
                  return value !== undefined && value !== null && value.length > 0;
              },
  
              // https://jqueryvalidation.org/email-method/
              email: function (value, element) {
  
                  // From https://html.spec.whatwg.org/multipage/forms.html#valid-e-mail-address
                  // Retrieved 2014-01-14
                  // If you have a problem with this implementation, report a bug against the above spec
                  // Or use custom methods to implement your own email validation
                  return this.optional(element) || /^[a-zA-Z0-9.!#$%&'*+\/=?^_`{|}~-]+@[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?(?:\.[a-zA-Z0-9](?:[a-zA-Z0-9-]{0,61}[a-zA-Z0-9])?)*$/.test(value);
              },
  
              // https://jqueryvalidation.org/url-method/
              url: function (value, element) {
  
                  // Copyright (c) 2010-2013 Diego Perini, MIT licensed
                  // https://gist.github.com/dperini/729294
                  // see also https://mathiasbynens.be/demo/url-regex
                  // modified to allow protocol-relative URLs
                  return this.optional(element) || /^(?:(?:(?:https?|ftp):)?\/\/)(?:\S+(?::\S*)?@)?(?:(?!(?:10|127)(?:\.\d{1,3}){3})(?!(?:169\.254|192\.168)(?:\.\d{1,3}){2})(?!172\.(?:1[6-9]|2\d|3[0-1])(?:\.\d{1,3}){2})(?:[1-9]\d?|1\d\d|2[01]\d|22[0-3])(?:\.(?:1?\d{1,2}|2[0-4]\d|25[0-5])){2}(?:\.(?:[1-9]\d?|1\d\d|2[0-4]\d|25[0-4]))|(?:(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)(?:\.(?:[a-z\u00a1-\uffff0-9]-*)*[a-z\u00a1-\uffff0-9]+)*(?:\.(?:[a-z\u00a1-\uffff]{2,})).?)(?::\d{2,5})?(?:[/?#]\S*)?$/i.test(value);
              },
  
              // https://jqueryvalidation.org/date-method/
              date: (function () {
                  var called = false;
  
                  return function (value, element) {
                      if (!called) {
                          called = true;
                          if (this.settings.debug && window.console) {
                              console.warn(
                                  "The `date` method is deprecated and will be removed in version '2.0.0'.\n" +
                                  "Please don't use it, since it relies on the Date constructor, which\n" +
                                  "behaves very differently across browsers and locales. Use `dateISO`\n" +
                                  "instead or one of the locale specific methods in `localizations/`\n" +
                                  "and `additional-methods.js`."
                              );
                          }
                      }
  
                      return this.optional(element) || !/Invalid|NaN/.test(new Date(value).toString());
                  };
              }()),
  
              // https://jqueryvalidation.org/dateISO-method/
              dateISO: function (value, element) {
                  return this.optional(element) || /^\d{4}[\/\-](0?[1-9]|1[012])[\/\-](0?[1-9]|[12][0-9]|3[01])$/.test(value);
              },
  
              // https://jqueryvalidation.org/number-method/
              number: function (value, element) {
                  return this.optional(element) || /^(?:-?\d+|-?\d{1,3}(?:,\d{3})+)?(?:\.\d+)?$/.test(value);
              },
  
              // https://jqueryvalidation.org/digits-method/
              digits: function (value, element) {
                  return this.optional(element) || /^\d+$/.test(value);
              },
  
              // https://jqueryvalidation.org/minlength-method/
              minlength: function (value, element, param) {
                  var length = $.isArray(value) ? value.length : this.getLength(value, element);
                  return this.optional(element) || length >= param;
              },
  
              // https://jqueryvalidation.org/maxlength-method/
              maxlength: function (value, element, param) {
                  var length = $.isArray(value) ? value.length : this.getLength(value, element);
                  return this.optional(element) || length <= param;
              },
  
              // https://jqueryvalidation.org/rangelength-method/
              rangelength: function (value, element, param) {
                  var length = $.isArray(value) ? value.length : this.getLength(value, element);
                  return this.optional(element) || (length >= param[0] && length <= param[1]);
              },
  
              // https://jqueryvalidation.org/min-method/
              min: function (value, element, param) {
                  return this.optional(element) || value >= param;
              },
  
              // https://jqueryvalidation.org/max-method/
              max: function (value, element, param) {
                  return this.optional(element) || value <= param;
              },
  
              // https://jqueryvalidation.org/range-method/
              range: function (value, element, param) {
                  return this.optional(element) || (value >= param[0] && value <= param[1]);
              },
  
              // https://jqueryvalidation.org/step-method/
              step: function (value, element, param) {
                  var type = $(element).attr("type"),
                      errorMessage = "Step attribute on input type " + type + " is not supported.",
                      supportedTypes = ["text", "number", "range"],
                      re = new RegExp("\\b" + type + "\\b"),
                      notSupported = type && !re.test(supportedTypes.join()),
                      decimalPlaces = function (num) {
                          var match = ("" + num).match(/(?:\.(\d+))?$/);
                          if (!match) {
                              return 0;
                          }
  
                          // Number of digits right of decimal point.
                          return match[1] ? match[1].length : 0;
                      },
                      toInt = function (num) {
                          return Math.round(num * Math.pow(10, decimals));
                      },
                      valid = true,
                      decimals;
  
                  // Works only for text, number and range input types
                  // TODO find a way to support input types date, datetime, datetime-local, month, time and week
                  if (notSupported) {
                      throw new Error(errorMessage);
                  }
  
                  decimals = decimalPlaces(param);
  
                  // Value can't have too many decimals
                  if (decimalPlaces(value) > decimals || toInt(value) % toInt(param) !== 0) {
                      valid = false;
                  }
  
                  return this.optional(element) || valid;
              },
  
              // https://jqueryvalidation.org/equalTo-method/
              equalTo: function (value, element, param) {
  
                  // Bind to the blur event of the target in order to revalidate whenever the target field is updated
                  var target = $(param);
                  if (this.settings.onfocusout && target.not(".validate-equalTo-blur").length) {
                      target.addClass("validate-equalTo-blur").on("blur.validate-equalTo", function () {
                          $(element).valid();
                      });
                  }
                  return value === target.val();
              },
  
              // https://jqueryvalidation.org/remote-method/
              remote: function (value, element, param, method) {
                  if (this.optional(element)) {
                      return "dependency-mismatch";
                  }
  
                  method = typeof method === "string" && method || "remote";
  
                  var previous = this.previousValue(element, method),
                      validator, data, optionDataString;
  
                  if (!this.settings.messages[element.name]) {
                      this.settings.messages[element.name] = {};
                  }
                  previous.originalMessage = previous.originalMessage || this.settings.messages[element.name][method];
                  this.settings.messages[element.name][method] = previous.message;
  
                  param = typeof param === "string" && {url: param} || param;
                  optionDataString = $.param($.extend({data: value}, param.data));
                  if (previous.old === optionDataString) {
                      return previous.valid;
                  }
  
                  previous.old = optionDataString;
                  validator = this;
                  this.startRequest(element);
                  data = {};
                  data[element.name] = value;
                  $.ajax($.extend(true, {
                      mode: "abort",
                      port: "validate" + element.name,
                      dataType: "json",
                      data: data,
                      context: validator.currentForm,
                      success: function (response) {
                          var valid = response === true || response === "true",
                              errors, message, submitted;
  
                          validator.settings.messages[element.name][method] = previous.originalMessage;
                          if (valid) {
                              submitted = validator.formSubmitted;
                              validator.resetInternals();
                              validator.toHide = validator.errorsFor(element);
                              validator.formSubmitted = submitted;
                              validator.successList.push(element);
                              validator.invalid[element.name] = false;
                              validator.showErrors();
                          } else {
                              errors = {};
                              message = response || validator.defaultMessage(element, {
                                  method: method,
                                  parameters: value
                              });
                              errors[element.name] = previous.message = message;
                              validator.invalid[element.name] = true;
                              validator.showErrors(errors);
                          }
                          previous.valid = valid;
                          validator.stopRequest(element, valid);
                      }
                  }, param));
                  return "pending";
              }
          }
  
      });
  
  // Ajax mode: abort
  // usage: $.ajax({ mode: "abort"[, port: "uniqueport"]});
  // if mode:"abort" is used, the previous request on that port (port can be undefined) is aborted via XMLHttpRequest.abort()
  
      var pendingRequests = {},
          ajax;
  
  // Use a prefilter if available (1.5+)
      if ($.ajaxPrefilter) {
          $.ajaxPrefilter(function (settings, _, xhr) {
              var port = settings.port;
              if (settings.mode === "abort") {
                  if (pendingRequests[port]) {
                      pendingRequests[port].abort();
                  }
                  pendingRequests[port] = xhr;
              }
          });
      } else {
  
          // Proxy ajax
          ajax = $.ajax;
          $.ajax = function (settings) {
              var mode = ("mode" in settings ? settings : $.ajaxSettings).mode,
                  port = ("port" in settings ? settings : $.ajaxSettings).port;
              if (mode === "abort") {
                  if (pendingRequests[port]) {
                      pendingRequests[port].abort();
                  }
                  pendingRequests[port] = ajax.apply(this, arguments);
                  return pendingRequests[port];
              }
              return ajax.apply(this, arguments);
          };
      }
      return $;
  }));