jquery $.each 用法

 function getData(msg){
        if(msg == undefined){
            msg = '';   
        }
        $.post("get.php",{"msg":msg},function(data){
            //var myjson = eval("("+data+")");
            if(data){
                var chatcontent = '';
                var obj = eval('('+data+')');                                                        #obj为对象

                $.each(obj,function(key,val){
                    chatcontent += "<div class='username'>"+val['nick']+" 说:</div>";          #遍历对象

                    chatcontent += "<div class='content'>"+val['con']+"</div>";
                })
                $("#chatshow").html(chatcontent);                                          

            }
            
            getData();  
        })  
    }
      

     # $.each()   jquery中用于遍历对象