JavaScript与Servlet实现验证码

验证码

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>验证码</title>

    <script>
        window.onload = function (){
            var img = document.getElementById("checkCode");
            img.onclick = function(){
                var date = new Date().getTime()
                img.src = "/day13/checkCodeServlet?"+date;
            }

        }
        function ReCheckCode(){
            var img = document.getElementById("checkCode");
            img.src = "/day13/checkCodeServlet?recheckCode"+Math.random();
        }
    </script>
</head>
<body>
<img id="checkCode" src="/day13/checkCodeServlet" alt=" 验证码"/>
<a id="refresh" href="#"  onclick="ReCheckCode();">看不清,换一张</a>
</body>
</html>
posted @ 2021-03-30 10:50  withLevi  阅读(69)  评论(0)  编辑  收藏  举报