摘要： JS文件如下：varsetting={async:{//异步加载enable:true,url:getUrl},callback:{beforeExpand:beforeExpand,onAsyncSuccess:onAsyncSuccess,onAsyncError:onAsyncError}};functioncreateTree(){$.ajax({url:'Handler.ashx?action=GetProvince',//urlaction是方法的名称data:{id:"0"},type:'POST',dataType:" 阅读全文