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vue滚动实现翻页

2026-02-17 06:15:06VUE

Vue 实现滚动翻页的方法

监听滚动事件结合分页加载

在 Vue 组件中监听滚动事件，当滚动到底部时触发数据加载。需要计算滚动位置和容器高度。

vue滚动实现翻页

<template>
  <div class="scroll-container" @scroll="handleScroll">
    <div v-for="item in items" :key="item.id">{{ item.content }}</div>
    <div v-if="loading">加载中...</div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [],
      page: 1,
      loading: false,
      hasMore: true
    }
  },
  methods: {
    async loadMore() {
      if (this.loading || !this.hasMore) return

      this.loading = true
      const newItems = await fetchData(this.page)

      if (newItems.length) {
        this.items.push(...newItems)
        this.page++
      } else {
        this.hasMore = false
      }
      this.loading = false
    },
    handleScroll(e) {
      const { scrollTop, clientHeight, scrollHeight } = e.target
      const bottomReached = scrollTop + clientHeight >= scrollHeight - 50

      if (bottomReached) {
        this.loadMore()
      }
    }
  },
  mounted() {
    this.loadMore()
  }
}
</script>

<style>
.scroll-container {
  height: 500px;
  overflow-y: auto;
}
</style>

使用 Intersection Observer API

更现代的解决方案是使用 Intersection Observer API，性能优于滚动事件监听。

<template>
  <div class="scroll-container">
    <div v-for="item in items" :key="item.id">{{ item.content }}</div>
    <div ref="sentinel" v-if="hasMore">
      <span v-if="loading">加载中...</span>
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [],
      page: 1,
      loading: false,
      hasMore: true,
      observer: null
    }
  },
  methods: {
    async loadMore() {
      if (this.loading || !this.hasMore) return

      this.loading = true
      const newItems = await fetchData(this.page)

      if (newItems.length) {
        this.items.push(...newItems)
        this.page++
      } else {
        this.hasMore = false
      }
      this.loading = false
    }
  },
  mounted() {
    this.observer = new IntersectionObserver((entries) => {
      if (entries[0].isIntersecting) {
        this.loadMore()
      }
    })

    this.$nextTick(() => {
      this.observer.observe(this.$refs.sentinel)
    })

    this.loadMore()
  },
  beforeDestroy() {
    this.observer.disconnect()
  }
}
</script>

使用第三方库

对于复杂场景，可以考虑使用专门处理无限滚动的库如 vue-infinite-loading。

vue滚动实现翻页

安装：

npm install vue-infinite-loading

使用示例：

<template>
  <div>
    <div v-for="item in items" :key="item.id">{{ item.content }}</div>
    <infinite-loading @infinite="loadMore" spinner="spiral">
      <div slot="no-more">没有更多数据了</div>
      <div slot="no-results">没有数据</div>
    </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.push(...newItems)
          this.page++
          $state.loaded()
        } else {
          $state.complete()
        }
      } catch (err) {
        $state.error()
      }
    }
  }
}
</script>