vue3写一个定时器

vue3没有this，取而代之的是proxy

所以在定时器的写法上也有所不同

话不多说直接上代码

<template>

<p>剩余时间:{{ count }}</p>

</template>

export default{

const seconds = ref(1800);//定义一下秒数，根据秒数来计算，需要自己判断

const countDown = () => {

let d = parseInt(seconds.value / (24 * 60 * 60));

d = d < 10 ? "0" + d : d;

let h = parseInt((seconds.value / (60 * 60)) % 24);

h = h < 10 ? "0" + h : h;

let m = parseInt((seconds.value / 60) % 60);

m = m < 10 ? "0" + m : m;

let s = parseInt(seconds.value % 60);

s = s < 10 ? "0" + s : s;

count.value = m + "分" + s + "秒";

// console.log('监听',count.value );

};

//

const timed = () => {

dsq.value = setInterval(() => {

seconds.value -= 1;

countDown();

}, 1000);

};

}

这样下来，一个倒计时30分钟的定时器就写好了