注册-异步请求 

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8"%>
<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=ISO-8859-1">
<title>login</title>
<script src="https://cdn.bootcss.com/jquery/3.3.1/jquery.min.js"></script>
</head>
<body>
	<form action="login.do">
		用户  名：<input name="name" type="text" onblur="checkNameFun()"/><span id="namespan"></span><br/>
		密    码：<input name="password1" type="password" />
		确认密码:<input name="password2" type="password" />
		<input type="submit" value="确定"/>
	</form>
</body>
<script type="text/javascript">
function checkNameFun(){
	$.ajax({
        "type": "GET",
        "url": "${pageContext.request.contextPath}/checkName.do",
        "data": "name=gjack",
        "dataType":"json",
        "success": function(data){
        		 alert(data.message);
                 $("#namespan").html(data.message);
           }
     });
	
}
	
	
</script>
</html>

　　

posted @ 2018-04-16 14:26  爱吃醋的工程师  阅读(139)  评论(0)    收藏  举报