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