使用定时器，每次往数组添加更新144个时间值，但是只想要最后144个最新的时间值
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<meta http-equiv="X-UA-Compatible" content="ie=edge">
<script src="https://cdn.bootcdn.net/ajax/libs/moment.js/2.27.0/moment.js"></script>
<title>Document</title>
<style>
[v-cloak] {
display: none;
}
</style>
</head>
<div id="app">
<h2 v-cloak>{{timeList}}</h2>
<!-- <button>点击显示时间</button>
{{time}}-{{weeks}} -->
</div>
<body>
<script src="https://cdn.jsdelivr.net/npm/vue@2.6.11/dist/vue.js"></script>
<script>
new Vue({
el: "#app",
data: {
timeList: []
},
methods: {
getNowTime() {
let endDate = new Date();
let splitTime = 5 * 60 * 1000;
let count = 144;
//转为时间戳
let endTime = endDate.getTime();
let mod = endTime % splitTime;
if (mod > 0) {
endTime = endTime - mod;
}
while (count-- > 0) {
let d = new Date();
d.setTime(endTime - count * splitTime);
this.timeList.push(moment(d).format("HH:mm:ss"));
}
},
timer() {
return setInterval(() => {
setTimeout(() => {
this.getNowTime()
}, 0)
}, 3000)
}
},
created() {
this.getNowTime()
},
watch: {
timeList() {
this.timer()
}
},
destroyed() {
clearTimeout(this.timer)
}
})
</script>
</body>
</html>
splice删掉之前的数据在重新添加
getNowTime() {
this.timeList.splice(0, this.timeList.length);///////////////增加这句
//...原来的代码
每次调用的时候数组为空就好了
getNowTime（）{
this.timeList = []
}
PS：问答VIP年卡 【限时加赠：IT技术图书免费领】，了解详情>>> https://vip.csdn.net/askvip?utm_source=1146287632