Vue führt einen Timer-Implementierungscode zur Beantwortung von Fragen ein

npm install --save vue-timer

import Vue from 'vue'
import VueTimer from 'vue-timer'

Vue.use(VueTimer)

<vue-timer 
    :time="time" 
    :autostart="false"
    @start="onStart"
    @pause="onPause"
    @resume="onResume"
    @stop="onStop">
    <div>{{ time | formatTime }}</div>
</vue-timer>

<template>
  <div class="answerTime">
    <vue-timer 
        :time="time" 
        :autostart="autoStart" 
        @start="onStart"
        @pause="onPause"
        @resume="onResume"
        @stop="onStop">
        <div class="time">{{ time | formatTime }}</div>
    </vue-timer>
  </div>
</template>

<script>
import Vue from 'vue'
import VueTimer from 'vue-timer'
Vue.use(VueTimer)

export default {
  data() {
    return {
      time: 60 * 10, //初始时间为10分钟
      autoStart: true, //自动启动
      isPaused: false, //是否暂停
      remainingTime: 0 //剩余时间
    }
  },
  methods: {
    onStart() {
      console.log('计时器已启动')
    },
    onStop() {
      console.log('计时器已停止')
    },
    onPause() {
      console.log('计时器已暂停')
      this.isPaused = true
    },
    onResume() {
      console.log('计时器已恢复')
      this.isPaused = false
    }
  },
  filters: {
    formatTime: function (value) {
      if (!value) return '00:00'
      let minute = parseInt(value / 60)
      let second = parseInt(value % 60)
      return `${minute < 10 ? '0' + minute : minute}:${second < 10 ? '0' + second : second}`
    }
  },
  watch: {
    remainingTime: function (value) {
      if (value <= 0) {
        this.onPause()
        alert('答题时间已结束')
      }
    }
  },
  created() {
    setInterval(() => {
      if (!this.isPaused) {
        this.remainingTime = this.time - this.$refs.timer.seconds
      }
    }, 1000)
  }
}
</script>

<style>
  .time {
    font-size: 24px;
    color: #f60;
    text-align: center;
    margin-top: 20px;
  }
</style>