javaweb/tomcat/web/register.html at master · CPU-Code/javaweb · GitHub

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

    <script>
        /*
            分析：
                点击超链接或者图片，需要换一张
                1.给超链接和图片绑定单击事件
                2.重新设置图片的src属性值
         */
        window.onload = function(){
            //1.获取图片对象
            var img = document.getElementById("checkCode");
            //2.绑定单击事件
            img.onclick = function(){
                //加时间戳
                var date = new Date().getTime();

                img.src = "/response/checkcode_servlet?" + date;
            }

            var img2 = document.getElementById("change");

            img2.onclick = function () {
                var date = new Date().getTime();

                img2.src = "/response/checkcode_servlet?" + date;
            }
        }
    </script>
</head>
<body>
    <img id="checkCode" src="/response/checkcode_servlet" />

    <a id="change" href="">看不清, 换一张</a>
</body>
</html>