题解 | #计时器#
计时器
https://www.nowcoder.com/practice/72c661d926494bd8a50608506915268c
function count(start, end) {
console.log(start)
var timer = setInterval(() => {
if (start < end) {
start ++
console.log(start)
} else {
clearInterval(timer)
}
}, 100)
return {
cancel: function() {
clearInterval(timer)
}
}
}