jquery异步请求实例代码-jquery

$.ajax({
type:"get",
dataType:"json",
url:"<%=basePath%>actionSmUser.do?method=getUserMsgByUserId",
data:"userId="+userId,
success:function(msg){
var data = eval("("+msg.responseText+")");
alert($("#userName").val());
$("#userName").val(data[0].userName);

}
});

$.getJSON(url,function(data){
if(data!=null && data!=""){
$("#userIdInput").val(data[0].userId);
$("#userNameInput").val(data[0].userName);
$("#menusIdInput").val(data[0].menusId);
$("#depIdInput").val(data[0].depId);
$("#isValidInput").val(data[0].isValid);
$("#userIdInput").attr("disabled",true);
}

});