text: function search(searchIconUrl) {
      $(".search-icon").css("opacity", "1");
      var listIndex = -1;
      var hotList = 0;
      var searchData = userDefinedSearchData.custom ? userDefinedSearchData : {
          "thisSearch": "https://www.baidu.com/s?wd=",
          "thisSearchIcon": "url(" + searchIconUrl + ")",
          "hotStatus": true,
          "custom": false,
          "data": [{
              name: "百度",
              img: "url(" + searchIconUrl + ") -80px 0px",
              position: "0px 0px",
              url: "https://www.baidu.com/s?wd="
          }, {
              name: "谷歌",
              img: "url(" + searchIconUrl + ")  -105px 0px",
              position: "-40px 0px",
              url: "https://www.google.com/search?q="
          }, {
              name: "必应",
              img: "url(" + searchIconUrl + ")  -80px -25px",
              position: "0px -40px",
              url: "https://cn.bing.com/search?q="
          }, {
              name: "好搜",
              img: "url(" + searchIconUrl + ") -105px -25px",
              position: "-40px -40px",
              url: "https://www.so.com/s?q="
          }, {
              name: "搜狗",
              img: "url(" + searchIconUrl + ") -80px -50px",
              position: "0px -80px",
              url: "https://www.sogou.com/web?query="
          }, {
              name: "淘宝",
              img: "url(" + searchIconUrl + ") -105px -50px",
              position: "-40px -80px",
              url: "https://s.taobao.com/search?q="
          }, {
              name: "京东",
              img: "url(" + searchIconUrl + ") -80px -75px",
              position: "0px -120px",
              url: "http://search.jd.com/Search?keyword="
          }, {
              name: "天猫",
              img: "url(" + searchIconUrl + ") -105px -75px",
              position: "-40px -120px",
              url: "https://list.tmall.com/search_product.htm?q="
          }, {
              name: "1688",
              img: "url(" + searchIconUrl + ") -80px -100px",
              position: "0px -160px",
              url: "https://s.1688.com/selloffer/offer_search.htm?keywords="
          }, {
              name: "知乎",
              img: "url(" + searchIconUrl + ") -105px -100px",
              position: "-40px -160px",
              url: "https://www.zhihu.com/search?type=content&q="
          }, {
              name: "微博",
              img: "url(" + searchIconUrl + ") -80px -125px",
              position: "0px -200px",
              url: "https://s.weibo.com/weibo/"
          }, {
              name: "B站",
              img: "url(" + searchIconUrl + ") -105px -125px",
              position: "-40px -200px",
              url: "http://search.bilibili.com/all?keyword="
          }, {
              name: "豆瓣",
              img: "url(" + searchIconUrl + ") -80px -150px",
              position: "0px -240px",
              url: "https://www.douban.com/search?source=suggest&q="
          }, {
              name: "优酷",
              img: "url(" + searchIconUrl + ") -105px -150px",
              position: "-40px -240px",
              url: "https://so.youku.com/search_video/q_"
          }, {
              name: "GitHub",
              img: "url(" + searchIconUrl + ") -80px -175px",
              position: "0px -280px",
              url: "https://github.com/search?utf8=✓&q="
          }]
      };
      var localSearchData = localStorage.getItem("searchData");
      if (localSearchData && (searchData.custom === localSearchData.custom)) {
          searchData = JSON.parse(localSearchData)
      }
  
      function filterChildren(element) {
          var thisText = $(element).contents().filter(function (index, content) {
              return content.nodeType === 3
          }).text().trim();
          return thisText
      }
  
      function getHotkeyword(value) {
          $.ajax({
              type: "GET",
              url: "https://sp0.baidu.com/5a1Fazu8AA54nxGko9WTAnF6hhy/su",
              async: true,
              data: {
                  wd: value
              },
              dataType: "jsonp",
              jsonp: "cb",
              success: function (res) {
                  $("#box ul").text("");
                  hotList = res.s.length;
                  if (hotList) {
                      $("#box").css("display", "block");
                      for (var i = 0; i < hotList; i++) {
                          $("#box ul").append("<li><span>" + (i + 1) + "</span> " + res.s[i] + "</li>");
                          $("#box ul li").eq(i).click(function () {
                              var thisText = filterChildren(this);
                              $("#txt").val(thisText);
                              window.open(searchData.thisSearch + thisText);
                              $("#box").css("display", "none")
                          });
                          if (i === 0) {
                              $("#box ul li").eq(i).css({
                                  "border-top": "none"
                              });
                              $("#box ul span").eq(i).css({
                                  "color": "#fff",
                                  "background": "#f54545"
                              })
                          } else {
                              if (i === 1) {
                                  $("#box ul span").eq(i).css({
                                      "color": "#fff",
                                      "background": "#ff8547"
                                  })
                              } else {
                                  if (i === 2) {
                                      $("#box ul span").eq(i).css({
                                          "color": "#fff",
                                          "background": "#ffac38"
                                      })
                                  }
                              }
                          }
                      }
                  } else {
                      $("#box").css("display", "none")
                  }
              },
              error: function (res) {
                  console.log(res)
              }
          })
      }
      $("#txt").keyup(function (e) {
          if ($(this).val()) {
              if (e.keyCode == 38 || e.keyCode == 40 || !searchData.hotStatus) {
                  return
              }
              getHotkeyword($(this).val())
          } else {
              $(".search-clear").css("display", "none");
              $("#box").css("display", "none")
          }
      });
      $("#txt").keydown(function (e) {
          if (e.keyCode === 40) {
              listIndex === (hotList - 1) ? listIndex = 0 : listIndex++;
              $("#box ul li").eq(listIndex).addClass("current").siblings().removeClass("current");
              var hotValue = filterChildren($("#box ul li").eq(listIndex));
              $("#txt").val(hotValue)
          }
          if (e.keyCode === 38) {
              if (e.preventDefault) {
                  e.preventDefault()
              }
              if (e.returnValue) {
                  e.returnValue = false
              }
              listIndex === 0 || listIndex === -1 ? listIndex = (hotList - 1) : listIndex--;
              $("#box ul li").eq(listIndex).addClass("current").siblings().removeClass("current");
              var hotValue = filterChildren($("#box ul li").eq(listIndex));
              $("#txt").val(hotValue)
          }
          if (e.keyCode === 13) {
              window.open(searchData.thisSearch + $("#txt").val());
              $("#box").css("display", "none");
              $("#txt").blur();
              $("#box ul li").removeClass("current");
              listIndex = -1
          }
      });
      $("#txt").focus(function () {
          $(".search-box").css("box-show", "inset 0 1px 2px rgba(27,31,35,.075), 0 0 0 0.2em rgba(3,102,214,.3)");
          if ($(this).val() && searchData.hotStatus) {
              getHotkeyword($(this).val())
          }
      });
      $("#txt").blur(function () {
          setTimeout(function () {
              $("#box").css("display", "none")
          }, 250)
      });
      for (var i = 0; i < searchData.data.length; i++) {
          $(".search-engine-list").append('<li><span style="background:' + searchData.data[i].img + (searchData.custom ? ' 0% 0% / cover no-repeat' : '') + '"/></span>' +
              searchData.data[i].name + "</li>")
      }
      $(".search-icon, .search-engine").hover(function () {
          $(".search-engine").css("display", "block")
      }, function () {
          $(".search-engine").css("display", "none")
      });
      $("#hot-btn").click(function () {
          $(this).toggleClass("off");
          searchData.hotStatus = !searchData.hotStatus;
          localStorage.searchData = JSON.stringify(searchData)
      });
      searchData.hotStatus ? $("#hot-btn").removeClass("off") : $("#hot-btn").addClass("off");
      $(".search-engine-list li").click(function () {
          var index = $(this).index();
          searchData.thisSearchIcon = searchData.custom ? searchData.data[index].img : searchData.data[index].position;
          if (searchData.custom) {
              $(".search-icon").css("background", searchData.thisSearchIcon + ' no-repeat').css("background-size", 'cover');
          } else {
              $(".search-icon").css("background-position", searchData.thisSearchIcon);
          }
          searchData.thisSearch = searchData.data[index].url;
          $(".search-engine").css("display", "none");
          localStorage.searchData = JSON.stringify(searchData)
      });
      if (searchData.custom) {
          $(".search-icon").css("background", searchData.thisSearchIcon + ' no-repeat').css("background-size", 'cover');
      } else {
          $(".search-icon").css("background-position", searchData.thisSearchIcon);
      }
      $("#search-btn").click(function () {
          var textValue = $("#txt").val();
          if (textValue) {
              window.open(searchData.thisSearch + textValue);
              $("#box ul").html("")
          } else {
              layer.msg("请输入关键词！", {
                  time: 500
              }, function () {
                  $("#txt").focus()
              })
          }
      })
  }
  
  //夜间模式切换
  function switchNightMode() {
      var night = document.cookie.replace(/(?:(?:^|.*;\s*)night\s*\=\s*([^;]*).*$)|^.*$/, "$1") || '0';
      if (night == '0') {
          document.body.classList.add('night');
          document.cookie = "night=1;path=/"
      } else {
          document.body.classList.remove('night');
          document.cookie = "night=0;path=/"
      }
  }