基于jstree使用AJAX请求获取数据形成树

//权限分配   $('#authority').click(function() {     $("#jstree").jstree({      "core" : {       "themes" : {        "responsive": false       },       // so that create works       "check_callback" : true,       'data' : function (obj, callback) {        var jsonstr="[]";        var jsonarray = eval('('+jsonstr+')');        $.ajax({         type: "GET",         url:"/demo/authority/getAuthoritys",         dataType:"json",         async: false,         success:function(result) {          var arrays= result;          for(var i=0 ; i<arrays.length; i++){           console.log(arrays[i])           var arr = {             "id":arrays[i].id,             "parent":arrays[i].parentId=="root"?"#":arrays[i].parentId,             "text":arrays[i].name           }           jsonarray.push(arr);          }         }         });        callback.call(this, jsonarray);       }      },      "types" : {       "default" : {        "icon" : "glyphicon glyphicon-flash"       },       "file" : {         "icon" : "glyphicon glyphicon-ok"       }      },      "state" : { "key" : "demo2" },      "plugins" : [ "dnd", "state", "types","checkbox","wholerow" ]     });     $('#setAuthority').modal();   }); 

<!-- 权限分配模框-->  <div class="modal fade" id="setAuthority">   <div class="modal-dialog">    <div class="modal-content message_align">     <div class="modal-header">      <button type="button" class="close" data-dismiss="modal"       aria-label="Close">       <span aria-hidden="true">×</span>      </button>      <h4 class="modal-title">权限分配</h4>     </div>     <div class="modal-body">      <div id= "jstree">            </div>     </div>     <div class="modal-footer">      <input type="hidden" id="url" />      <button type="button" class="btn btn-default" data-dismiss="modal">取消</button>      <a onclick="authorityConfirm()" class="btn btn-success"       data-dismiss="modal">确定</a>     </div>    </div>    <!-- /.modal-content -->   </div>   <!-- /.modal-dialog -->  </div>