BootStrapselect2动态改变值的方法

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 

$("#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