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vue实现无限滚动加载

2026-02-21 16:20:43VUE

vue实现无限滚动加载的方法

使用Intersection Observer API

Intersection Observer API提供了一种异步观察目标元素与祖先元素或顶级文档视窗交叉状态的方法。适用于现代浏览器，性能较好。

<template>
  <div>
    <div v-for="item in items" :key="item.id">{{ item.content }}</div>
    <div ref="loader" class="loader">Loading...</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [],
      page: 1
    }
  },
  mounted() {
    const observer = new IntersectionObserver((entries) => {
      if (entries[0].isIntersecting) {
        this.loadMore()
      }
    })
    observer.observe(this.$refs.loader)
  },
  methods: {
    async loadMore() {
      const newItems = await fetchData(this.page)
      this.items = [...this.items, ...newItems]
      this.page++
    }
  }
}
</script>

使用window滚动事件

传统方法通过监听window的scroll事件实现，需要考虑节流优化性能。

<template>
  <div>
    <div v-for="item in items" :key="item.id">{{ item.content }}</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [],
      page: 1,
      isLoading: false
    }
  },
  mounted() {
    window.addEventListener('scroll', this.handleScroll)
    this.loadMore()
  },
  beforeDestroy() {
    window.removeEventListener('scroll', this.handleScroll)
  },
  methods: {
    handleScroll() {
      const scrollTop = document.documentElement.scrollTop || document.body.scrollTop
      const windowHeight = window.innerHeight
      const scrollHeight = document.documentElement.scrollHeight || document.body.scrollHeight

      if (scrollTop + windowHeight >= scrollHeight - 100 && !this.isLoading) {
        this.loadMore()
      }
    },
    async loadMore() {
      this.isLoading = true
      const newItems = await fetchData(this.page)
      this.items = [...this.items, ...newItems]
      this.page++
      this.isLoading = false
    }
  }
}
</script>

使用第三方库vue-infinite-loading

vue-infinite-loading是一个专门为Vue设计的无限滚动组件，简化了实现过程。

安装：

npm install vue-infinite-loading

使用：

<template>
  <div>
    <div v-for="item in items" :key="item.id">{{ item.content }}</div>
    <infinite-loading @infinite="loadMore"></infinite-loading>
  </div>
</template>

<script>
import InfiniteLoading from 'vue-infinite-loading'

export default {
  components: { InfiniteLoading },
  data() {
    return {
      items: [],
      page: 1
    }
  },
  methods: {
    async loadMore($state) {
      try {
        const newItems = await fetchData(this.page)
        if (newItems.length) {
          this.items = [...this.items, ...newItems]
          this.page++
          $state.loaded()
        } else {
          $state.complete()
        }
      } catch (error) {
        $state.error()
      }
    }
  }
}
</script>