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vue实现无线滚动列表

2026-01-07 03:52:00VUE

无限滚动列表的实现方法

在Vue中实现无限滚动列表通常结合监听滚动事件和动态加载数据。以下是几种常见方法：

使用自定义指令

创建自定义指令v-infinite-scroll监听滚动事件：

Vue.directive('infinite-scroll', {
  inserted(el, binding) {
    const callback = binding.value;
    const options = {
      root: null,
      rootMargin: '0px',
      threshold: 1.0
    };

    const observer = new IntersectionObserver((entries) => {
      if (entries[0].isIntersecting) {
        callback();
      }
    }, options);

    observer.observe(el);
  }
});

组件中使用：

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

<script>
export default {
  data() {
    return {
      items: [],
      page: 1
    }
  },
  methods: {
    loadMore() {
      fetch(`/api/items?page=${this.page}`)
        .then(res => res.json())
        .then(data => {
          this.items = [...this.items, ...data];
          this.page++;
        });
    }
  }
}
</script>

使用第三方库

安装vue-infinite-scroll库：

npm install vue-infinite-scroll

使用示例：

<template>
  <div v-infinite-scroll="loadMore" infinite-scroll-disabled="busy" infinite-scroll-distance="10">
    <div v-for="item in items" :key="item.id">{{item.content}}</div>
  </div>
</template>

<script>
import infiniteScroll from 'vue-infinite-scroll';

export default {
  directives: { infiniteScroll },
  data() {
    return {
      items: [],
      page: 1,
      busy: false
    }
  },
  methods: {
    loadMore() {
      this.busy = true;
      fetch(`/api/items?page=${this.page}`)
        .then(res => res.json())
        .then(data => {
          this.items = [...this.items, ...data];
          this.page++;
          this.busy = false;
        });
    }
  }
}
</script>

原生滚动事件监听

通过监听滚动事件实现：

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

<script>
export default {
  data() {
    return {
      items: [],
      page: 1,
      loading: false
    }
  },
  mounted() {
    this.loadInitialData();
  },
  methods: {
    handleScroll(e) {
      const { scrollTop, clientHeight, scrollHeight } = e.target;
      if (scrollHeight - scrollTop <= clientHeight + 100 && !this.loading) {
        this.loadMore();
      }
    },
    loadInitialData() {
      this.loading = true;
      fetch(`/api/items?page=1`)
        .then(res => res.json())
        .then(data => {
          this.items = data;
          this.loading = false;
        });
    },
    loadMore() {
      this.loading = true;
      fetch(`/api/items?page=${this.page}`)
        .then(res => res.json())
        .then(data => {
          this.items = [...this.items, ...data];
          this.page++;
          this.loading = false;
        });
    }
  }
}
</script>

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