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JavaScript implements that after clicking a button, it will take another 60 seconds before the button can be clicked again.

高洛峰

Release： 2016-11-28 11:30:32

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When registering, you need to send an email to verify the account activation. In order to avoid repeated sending of the email, you can set the button to wait for a while after clicking send before you can continue to click it. Here is a simple example:

<<a href="http://www.php1.cn/">html</a>> 
<head> 
<title>点击获取验证码按钮后按钮变灰，倒计时一段时间后又可重复点击</title> 
</head> 
<body> 
<input type="button" id="btn" value="免费获取验证码" /> 
<script type="text/javascript"> 
var wait=60; 
function time(o) { 
        if (wait == 0) { 
            o.removeAttribute("disabled");           
            o.value="免费获取验证码"; 
            wait = 60; 
        } else { 
            o.setAttribute("disabled", true); 
            o.value=wait+"秒后可以重新发送"; 
            wait--; 
            setTimeout(function() { 
                time(o) 
            }, 
            1000) 
        } 
    } 
document.getElementById("btn").onclick=function(){time(this);} 
</script> 
</body> 
</html>

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source：php.cn

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