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  • 60秒倒计时

    <!DOCTYPE html>
    <html lang="en">
    <head>
        <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
        <title>js实现倒计时60秒的简单代码(推荐)</title>
    </head>
     
    <body>
    <input type="button" id="btn" value="获取验证码" onclick="settime(this)" />
    <script type="text/javascript">
      // countdown 最好是后台传过来的值 var countdown=60; function settime(val) { if (countdown == 0) { val.removeAttribute("disabled");
           // 两种方法都可以 
           // val.disabled = false val.value
    ="获取验证码"; countdown = 60; } else { val.setAttribute("disabled", true);
           // 两种方法都可以
           // val.disabled = true val.value
    =countdown + "秒后重新发送"; countdown--; setTimeout(function() { settime(val) },1000) } } </script> </body> </html>
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  • 原文地址:https://www.cnblogs.com/maxiag/p/10644075.html
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