发送验证码倒计时案例
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Document</title>
</head>
<body>
手机号: <input type="number">
<button>发送</button>
<script>
var btn = document.querySelector('button');
var time = 60; // 剩下的秒数
btn.addEventListener('click', function() {
this.disabled = true;
var timer = setInterval(() => {
if (time == 0) {
// 清除定时器和复原按钮
clearInterval(timer);
btn.disabled = false;
btn.innerHTML = '发送';
time = 60; // 需要重新开始计算时间
} else {
btn.innerHTML = '还剩' + time + '秒..';
time--;
}
}, 1000);
})
</script>
</body>
</html>
