当计时器达到0时，我该如何使用clearInterval()来停止计时器

Question

这里有一个简单的计时器，当计时器达到0时，我如何在这段代码中实现clearInterval((？它目前是无限的。

const start = 0.1; //6 seconds
let time = start * 60;
const count = document.querySelector('#countdown-timer');
const interval = setInterval(updateTimer, 1000);
function updateTimer() {
const minutes = Math.floor(time / 60);
let seconds = time % 60;
seconds = seconds < 10 ? '0' + seconds : seconds;
count.innerHTML = `${minutes}:${seconds}`;
time--;
}

<span id="countdown-timer"></span>

Answer 1

像这个

您还可以简化填充

const start = 0.1; //6 seconds
let time = start * 60;
const count = document.querySelector('#countdown-timer');
const interval = setInterval(updateTimer, 1000);
function updateTimer() {
if (time<=0) clearInterval(interval)
const minutes = Math.floor(time / 60);
let seconds = time % 60;
count.innerHTML = `${minutes}:${String(seconds).padStart(2,'0')}`;
time--;
}

<span id="countdown-timer"></span>