开启倒计时，直接保存到vuex中，且存储到本地持久化
// state.js
const runTime = localStorage.getItem('time');
paymentRunTime:runTime
// mutations.js
TimeReduction(state) {
this.timerId = setInterval(() => {
if (state.paymentRunTime === 0) {
state.paymentRunTime = 60;
return clearInterval(this.timerId)
}
state.paymentRunTime -= 1;
localStorage.setItem('time',state.paymentRunTime)
},1000);
},
在需要用到的页面钩子函数调用方法， created（）{ this.$store.commit(TimeReduction) }
知识点扩展：
倒计时实例代码：
<template>
<div class="captcha-row">
<input class="captcha-input" placeholder="输入验证码" auto-focus />
<div v-if="showtime===null" class="captcha-button" @click="send">
获取验证码
</div>
<div v-else class="captcha-button">
{{showtime}}
</div>
</div>
</template>
<script>
export default {
data() {
return {
// 计时器,注意需要进行销毁
timeCounter: null,
// null 则显示按钮 秒数则显示读秒
showtime: null
}
},
methods: {
// 倒计时显示处理
countDownText(s) {
this.showtime = `${s}s后重新获取`
},
// 倒计时 60秒 不需要很精准
countDown(times) {
const self = this;
// 时间间隔 1秒
const interval = 1000;
let count = 0;
self.timeCounter = setTimeout(countDownStart, interval);
function countDownStart() {
if (self.timeCounter == null) {
return false;
}
count++
self.countDownText(times - count + 1);
if (count > times) {
clearTimeout(self.timeCounter)
self.showtime = null;
} else {
self.timeCounter = setTimeout(countDownStart, interval)
}
}
},
send() {
this.countDown(60);
}
},
}
</script>
