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用vue实现秒表应用

2026-01-20 01:11:18VUE

实现Vue秒表应用

创建Vue组件实现秒表功能，包含开始、暂停、重置按钮，并显示时间。

模板部分

<template>
  <div class="stopwatch">
    <div class="display">{{ formattedTime }}</div>
    <div class="controls">
      <button @click="start" :disabled="isRunning">开始</button>
      <button @click="pause" :disabled="!isRunning">暂停</button>
      <button @click="reset">重置</button>
    </div>
  </div>
</template>

脚本部分

<script>
export default {
  data() {
    return {
      isRunning: false,
      startTime: 0,
      elapsedTime: 0,
      timerInterval: null
    }
  },
  computed: {
    formattedTime() {
      const totalSeconds = Math.floor(this.elapsedTime / 1000)
      const minutes = Math.floor(totalSeconds / 60)
      const seconds = totalSeconds % 60
      const milliseconds = Math.floor((this.elapsedTime % 1000) / 10)

      return `${minutes.toString().padStart(2, '0')}:${seconds.toString().padStart(2, '0')}.${milliseconds.toString().padStart(2, '0')}`
    }
  },
  methods: {
    start() {
      if (!this.isRunning) {
        this.startTime = Date.now() - this.elapsedTime
        this.timerInterval = setInterval(this.updateTime, 10)
        this.isRunning = true
      }
    },
    pause() {
      if (this.isRunning) {
        clearInterval(this.timerInterval)
        this.isRunning = false
      }
    },
    reset() {
      clearInterval(this.timerInterval)
      this.isRunning = false
      this.elapsedTime = 0
    },
    updateTime() {
      this.elapsedTime = Date.now() - this.startTime
    }
  },
  beforeUnmount() {
    clearInterval(this.timerInterval)
  }
}
</script>

样式部分

<style scoped>
.stopwatch {
  text-align: center;
  margin: 20px;
  font-family: Arial, sans-serif;
}

.display {
  font-size: 3em;
  margin-bottom: 20px;
}

.controls button {
  margin: 0 5px;
  padding: 8px 16px;
  font-size: 1em;
  cursor: pointer;
}

button:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}
</style>