function getVideo(id){ $.ajax({ url:"../../dataservice?serviceobj=UIvio&action=getAllVideo", data:{"id":id}, type: "post", dataType: "json", success:function(jsonDate){ var obj = JSON.stringify(jsonDate); obj = JSON.parse(obj); for(var key in obj) { //第一层循环取到各个list var List = obj[key]; var str =""; for(var student in List) { //第二层循环取list中的对象 alert(123); str+='