Countdown has timer, count, clear features. Test covered 100%.
npm install count-down-ts --saveyarn add count-down-ts --savebower install count-down-ts --saveimport countdown from 'count-down-ts'const countdown = require('count-down-ts')<!DOCTYPE html>
<html>
<head>
<meta charset="UTF-8" />
<title>DEMO</title>
</head>
<body>
<script type="text/javascript" src="node_modules/count-down-ts/dist/count-down-ts.js"></script>
<script type="text/javascript">
var countdown = window.countdown
</script>
</body>
</html>// init countdown
countdown.start(60, 0, c => console.log(c))
OR
countdown.start()
// cleat countdown setTimeout & count & timer
countdown.clear()
// countdown setTimeout return value
countdown.timer
// countdown current number
countdown.countcount: Default 60, type number. Tips: count must greater than down, or equal down.
down: Default 0, type number.
callback: Type (c: number) => void.