Jquery Ajax请求，返回JSON处理

$.ajax({
    type:‘post‘,
    url:‘/customize/control/servicesTicketServices‘,
    data:{operFlag:‘search‘},
    dataType:‘json‘,
    async:false,
    success:function(returnValue){
        // 处理成功，遍历返回值处理
        var searchRTDataAry = eval(returnValue);
        $.each(searchRTDataAry, function (i, n) {
            var userName = n["meta_userName"];
        });

    },error:function(XMLHttpRequest, textStatus, errorThrown){
        // 处理失败，显示错误信息
        var errorInfo = "status:"+XMLHttpRequest.status;
        errorInfo+= ",readyState:"+XMLHttpRequest.readyState;
        alert("处理失败，[错误信息："+errorInfo+"]");
    }
});