text: // AJAX请求，获取csrftoken
  $.ajaxSetup({
      beforeSend: function(xhr, settings) {
          function getCookie(name) {
              var cookieValue = null;
              if (document.cookie && document.cookie != '') {
                  var cookies = document.cookie.split(';');
                  for (var i = 0; i < cookies.length; i++) {
                      var cookie = jQuery.trim(cookies[i]);
                      // Does this cookie string begin with the name we want?
                      if (cookie.substring(0, name.length + 1) == (name + '=')) {
                          cookieValue = decodeURIComponent(cookie.substring(name.length + 1));
                          break;
                      }
                  }
              }
              return cookieValue;
          }
          function csrfSafeMethod(method) {
              // these HTTP methods do not require CSRF protection
              return (/^(GET|HEAD|OPTIONS|TRACE)$/.test(method));
          }
  
          if (!csrfSafeMethod(settings.type) && !this.crossDomain) {
              var csrftoken = getCookie('csrftoken');
              xhr.setRequestHeader("X-CSRFToken", csrftoken);
          }
      }
  });
  