select2 ajax 設(shè)置默認(rèn)值,初始值的方法

 //two AJAX獲取數(shù)據(jù)方式(每次請求)
 var $c_HospitalCode = $("#c_HospitalCode").select2({
 ajax: {
  type: 'GET',
  url: "/Report/AjaxOption/Ajax_LoadHospitalByKey",
  dataType: 'json',
  delay: 400,
  data: function (params) {
   return {
    key: params.term, // search term 請求參數(shù)
    page: params.page,
    MKORGCode: '@VModel.MKORGCode'
   };
  },
  processResults: function (data, params) {
   //重命名字段名
   for (var i = 0; i < data.length; i++)
   {
    data[i].id = data[i].Value;
    data[i].text = data[i].Name;
   }
   //params.page = params.page || 1;
   return {
    results: data//,//itemList
    //pagination: {
    // more: (params.page * 30) < data.length
    //}
   };
  },
  cache: true
 },

 placeholder: '請選擇',//默認(rèn)文字提示
 //placeholder: { id: "2", text: "text2" },
 language: "zh-CN",
 tags: true,//允許手動添加
 separator: ",", // 分隔符
 allowClear: true,//允許清空
 escapeMarkup: function (markup) { return markup; }, // 自定義格式化防止xss注入
 minimumInputLength: 3,//最少輸入多少個字符后開始查詢
 formatResult: function formatRepo(repo) { return repo.text; }, // 函數(shù)用來渲染結(jié)果
 formatSelection: function formatRepoSelection(repo) { return repo.text; }//, // 函數(shù)用于呈現(xiàn)當(dāng)前的選擇 
 });

 //再次加載默認(rèn)值. 賦值. 
  $.ajax({
   url: "/Report/AjaxOption/Ajax_LoadHospitalByHospitalCodes", 
   data: { HospitalCodes: '@VModel.HospitalCode' },
   dataType:'json',
   success: function (data) { 
    for (var d = 0; d < data.length; d++) {
     var item = data[d]; 
     var option = new Option(item.Name, item.Value, true, true); 
     $c_HospitalCode.append(option);
    }

    $c_HospitalCode.trigger('change');//使用這個方法顯示到select2上.
   } 
  });