使用JQuery的ajax来发送用户消息

<script src="../js/jquery.min.js"></script>
<script type="text/javascript" language="javascript">
function doSave() {
　　　　 //获取data
	var username = $("#username").val();
	var phone = $("#phone").val();
	var email = $("#email").val();
	
	// *** 此处忽略对输入框中的数据的验证 ***
	
	$.ajax({
		"url":"update_user_info.do",
		"data": {
				"username":username,
				"phone":phone,
				"email":email
			},
		"type":"POST",
		"dataType":"json",
		"success":function(obj) {
			if (obj.state == 1) {
				alert("保存成功！");
			} else {
				alert("发生未知错误！请联系系统管理员！");
			}
		}
	});
}
</script>