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vue实现按钮计时

2026-02-19 07:10:17VUE

Vue 实现按钮计时功能

在 Vue 中实现按钮计时功能通常涉及倒计时逻辑和按钮状态的动态切换。以下是两种常见实现方式：

基础倒计时实现

<template>
  <button @click="startCountdown" :disabled="isCounting">
    {{ buttonText }}
  </button>
</template>

<script>
export default {
  data() {
    return {
      count: 60,
      isCounting: false,
      timer: null
    }
  },
  computed: {
    buttonText() {
      return this.isCounting ? `剩余${this.count}秒` : '获取验证码'
    }
  },
  methods: {
    startCountdown() {
      this.isCounting = true
      this.timer = setInterval(() => {
        this.count--
        if (this.count <= 0) {
          clearInterval(this.timer)
          this.isCounting = false
          this.count = 60
        }
      }, 1000)
    }
  },
  beforeDestroy() {
    clearInterval(this.timer)
  }
}
</script>

使用组件封装

创建可复用的倒计时按钮组件：

<template>
  <button 
    :class="{ 'disabled': counting }"
    @click="triggerCountdown"
    :disabled="counting"
  >
    {{ counting ? `${count}秒后重试` : text }}
  </button>
</template>

<script>
export default {
  props: {
    duration: {
      type: Number,
      default: 60
    },
    text: {
      type: String,
      default: '发送验证码'
    }
  },
  data() {
    return {
      count: this.duration,
      counting: false,
      timer: null
    }
  },
  methods: {
    triggerCountdown() {
      this.counting = true
      this.$emit('click')

      this.timer = setInterval(() => {
        this.count--
        if (this.count <= 0) {
          this.resetCountdown()
        }
      }, 1000)
    },
    resetCountdown() {
      clearInterval(this.timer)
      this.counting = false
      this.count = this.duration
    }
  },
  beforeDestroy() {
    clearInterval(this.timer)
  }
}
</script>

<style scoped>
.disabled {
  opacity: 0.6;
  cursor: not-allowed;
}
</style>

使用 Composition API 实现

Vue 3 的 Composition API 版本：

<template>
  <button @click="start" :disabled="isActive">
    {{ isActive ? `${seconds}秒后重试` : '点击发送' }}
  </button>
</template>

<script setup>
import { ref } from 'vue'

const seconds = ref(60)
const isActive = ref(false)
let timer = null

const start = () => {
  isActive.value = true
  timer = setInterval(() => {
    seconds.value--
    if (seconds.value <= 0) {
      clearInterval(timer)
      isActive.value = false
      seconds.value = 60
    }
  }, 1000)
}
</script>