验证码:
._htmlgetidentifingcode获得随机验证码">
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- <!DOCTYPE html>
- <html lang="en">
- <head>
- <meta charset="UTF-8">
- <title>随机验证码</title>
- </head>
- <body>
- <p>验证码:</p>
- <div id="login" onclick="change()"></div>
- </body>
- <script>
- function getCode(n) {
- // var all = "azxcvbnmsdfghjklqwertyuiopZXCVBNMASDFGHJKLQWERTYUIOP0123456789";
- // var all = "ZXCVBNMASDFGHJKLQWERTYUIOP0123456789";
- var all = "0123456789";
- var b = "";
- for (var i = 0; i < n; i++) {
- var index = Math.floor(Math.random() * 10);
- b += all.charAt(index);
- }
- return b;
- }
- function change() {
- document.getElementById("login").innerHTML = getCode(4);
- }
- window.onload = change;
- </script>
- </html>

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