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<%@ page language="java" contentType="text/html; charset=UTF-8"
pageEncoding="UTF-8"%>
<!DOCTYPE html>
<html>
<head>
<script type="text/javascript" src="jquery-3.4.1.min.js"></script>
<script type="text/javascript">
function reloadCheckImg(){
//alert("hahhhh");
$("img").attr("src","img.jsp?t="+(new Date().getTime()));
}
$(document).ready(function(){
//alert("hahhhh");
$("#checkcodeId").blur(function(){
//alert("hahhhh");
var checkcode=$("#checkcodeId").val();
//校验： ， ，
$.post(
"CheckCodeServlet",
"checkcode="+checkcode,
function(result){
var resultHtml= $("<img src='"+result+"' height='15' width='15px'/>");
$("#tip").html(resultHtml);
}
);
});
});
</script>
<title>验证码</title>
</head>
<body>
验证码：
<input type="text" name="checkcode" id="checkcodeId" size=4/>
<!-- 验证码 -->
<a href="javascript:reloadCheckImg();"><img src="img.jsp" /></a>
<span id="tip"> </span>
</body>
</html>
