标签：function cursor style target 验证码 timer 发送 节流
<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<title></title>
<style lang="">
#btn {
width: 180px;
height: 30px;
border: 2px solid coral;
text-align: center;
line-height: 30px;
cursor: pointer;
user-select: none;
}
</style>
</head>
<body>
<div id="btn">获取验证码</div>
</body>
<script>
function submit(e) {
let t = 10;
let timer;
e.target.innerText = t;
e.target.style.cursor = 'not-allowed';
e.target.style.color = 'red';
e.target.style.backgroundColor = '#ccc';
timer = setInterval(() => {
e.target.innerText = --t;
if (t === 0) {
clearInterval(timer)
e.target.style.cursor = 'pointer';
e.target.innerText = '获取验证码';
e.target.style.color = '#000';
e.target.style.backgroundColor = '#fff';
}
}, 1000)
}
function throttle1(fn, wait) {
let timer = null;
return function () {
if (!timer) { //当定时器有值的时候，不执行
fn.apply(this, arguments); //点击立即执行
timer = setTimeout(() => {
timer = null;
}, wait)
}
}
}
btn.addEventListener('click', throttle1(submit, 10000))
</script>
</html>
标签：function,
cursor,
style,
target,
验证码,
timer,
发送,
节流
From： https://www.cnblogs.com/StevenYF/p/18047784