html 按钮点击倒计时，限制不可点击
e94cbabd25cfc7f3f53a50a235734c22.jpg
<!DOCTYPE html>
<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
<!-- VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV -->
<!-- VVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVVV -->
<input type="button" style="height:32px;width:120px;" value="点击发送验证码" onclick="sendCode(this)" />
<script type="text/javascript">
var clock = '';
var nums = 3;
var btn;
function sendCode(thisBtn) {
btn = thisBtn;
btn.disabled = true; //将按钮置为不可点击
btn.value = nums + '秒后可重新获取';
clock = setInterval(doLoop, 1000); //一秒执行一次
}
function doLoop() {
nums--;
if (nums > 0) {
btn.value = nums + '秒后可重新获取';
} else {
clearInterval(clock); //清除js定时器
btn.disabled = false;
btn.value = '点击发送验证码';
nums = 3; //重置时间
}
}
</script>
<!-- AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA -->
<!-- AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA -->
</body>
</html>
