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bootstrap select2 动态改变值 1,selec2动态赋值 var temp=JSON.stringify({ id: "1|所有停车场", name: "所有停车场" }); $("#e_pid").attr("value", tempP);                             $("#e_pid").select2({                                 placeholder: "查找停车场名称(多选)",                                 language: "zh-CN",                                 minimumInputLength: 1,                                 allowClear: true,                                 multiple: true,                                 ajax: {                                     // instead of writing the function to execute the request we use Select2's convenient helper                                     url: "/manage/park/index/json/index",                                     dataType: 'json',                                     data: function (term, page) {                                         return {                                             parkName: term,// search term                                             powerpid: "1"                                         };                                     },                                     results: function (data, page) { // parse the results into the format expected by Select2.                                         // since we are using custom formatting functions we do not need to alter remote JSON data                                         for (var i = 0; i < data.length; i++) {                                             data[i].id = data[i].id+"|"+data[i].name;                                         };                                         data.push({ id: "577cb125f8d2c404572413d1|无", name: "无" });                                         return {                                             results: data                                         };                                     }                                 },                                 initSelection: function (element, callback) { //赋初始值                                     // the input tag has a value attribute preloaded that points to a preselected movie's id                                     // this function resolves that id attribute to an object that select2 can render                                     // using its formatResult renderer - that way the movie name is shown preselected                                     var data = [];                                     var value = ""                                     var str = $(element).val().split('^');                                     for (var i = 0; i < str.length; i++) {                                         var temp = JSON.parse(str[i]);                                         value += temp.id + ",";                                         data.push(temp);                                     }                                     ;                                     value = value.substring(0, value.length - 1);                                     $(element).val(value);                                     callback(data);                                 },                                 formatSelection: function (item) {                                     return item.name;//注意此处的name，要和ajax返回数组的键值一样                                 }, // 选择结果中的显示                                 formatResult: function (item) {                                     return item.name;//注意此处的name                                 },// 搜索列表中的显示                                 dropdownCssClass: "bigdrop", // apply css that makes the dropdown taller                                 escapeMarkup: function (m) {                                     return m;                                 }                             }); 2，动态改变值                                                     $("#e_pid").attr("value", temp);                                                     $("#e_pid").trigger('change'); //动态改变值以后必须触发改变时间。否则将不会生效

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