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vue组件实现拖拽

2026-02-17 13:46:24VUE

Vue组件实现拖拽功能

在Vue中实现拖拽功能可以通过原生HTML5的拖拽API或第三方库如vuedraggable来完成。以下是两种方法的详细说明：

使用HTML5原生拖拽API

HTML5提供了原生的拖拽API，可以通过draggable属性、dragstart、dragend、dragover和drop等事件来实现拖拽功能。

<template>
  <div>
    <div 
      v-for="item in items" 
      :key="item.id"
      draggable="true"
      @dragstart="handleDragStart($event, item)"
      @dragend="handleDragEnd"
      class="draggable-item"
    >
      {{ item.text }}
    </div>
    <div 
      @dragover.prevent
      @drop="handleDrop"
      class="drop-zone"
    >
      拖拽到这里
    </div>
  </div>
</template>

<script>
export default {
  data() {
    return {
      items: [
        { id: 1, text: 'Item 1' },
        { id: 2, text: 'Item 2' },
        { id: 3, text: 'Item 3' }
      ],
      draggedItem: null
    }
  },
  methods: {
    handleDragStart(event, item) {
      this.draggedItem = item;
      event.dataTransfer.effectAllowed = 'move';
    },
    handleDragEnd() {
      this.draggedItem = null;
    },
    handleDrop() {
      if (this.draggedItem) {
        // 处理拖拽后的逻辑
        console.log('Dropped item:', this.draggedItem);
      }
    }
  }
}
</script>

<style>
.draggable-item {
  padding: 10px;
  margin: 5px;
  background: #f0f0f0;
  cursor: move;
}
.drop-zone {
  padding: 20px;
  margin: 10px;
  background: #e0e0e0;
  border: 2px dashed #ccc;
}
</style>

使用vuedraggable库

vuedraggable是一个基于Sortable.js的Vue拖拽组件，使用起来更加简单和强大。

安装vuedraggable：

npm install vuedraggable

使用示例：

<template>
  <div>
    <draggable 
      v-model="items" 
      group="items" 
      @start="dragStart" 
      @end="dragEnd"
    >
      <div v-for="item in items" :key="item.id" class="draggable-item">
        {{ item.text }}
      </div>
    </draggable>
  </div>
</template>

<script>
import draggable from 'vuedraggable';

export default {
  components: {
    draggable
  },
  data() {
    return {
      items: [
        { id: 1, text: 'Item 1' },
        { id: 2, text: 'Item 2' },
        { id: 3, text: 'Item 3' }
      ]
    }
  },
  methods: {
    dragStart(event) {
      console.log('Drag started:', event);
    },
    dragEnd(event) {
      console.log('Drag ended:', event);
    }
  }
}
</script>

<style>
.draggable-item {
  padding: 10px;
  margin: 5px;
  background: #f0f0f0;
  cursor: move;
}
</style>

拖拽排序与跨列表拖拽

vuedraggable支持跨列表拖拽和排序。以下是一个跨列表拖拽的示例：

<template>
  <div>
    <h3>List 1</h3>
    <draggable 
      v-model="list1" 
      group="items" 
      class="list"
    >
      <div v-for="item in list1" :key="item.id" class="draggable-item">
        {{ item.text }}
      </div>
    </draggable>

    <h3>List 2</h3>
    <draggable 
      v-model="list2" 
      group="items" 
      class="list"
    >
      <div v-for="item in list2" :key="item.id" class="draggable-item">
        {{ item.text }}
      </div>
    </draggable>
  </div>
</template>

<script>
import draggable from 'vuedraggable';

export default {
  components: {
    draggable
  },
  data() {
    return {
      list1: [
        { id: 1, text: 'Item 1' },
        { id: 2, text: 'Item 2' }
      ],
      list2: [
        { id: 3, text: 'Item 3' },
        { id: 4, text: 'Item 4' }
      ]
    }
  }
}
</script>

<style>
.list {
  min-height: 50px;
  padding: 10px;
  background: #e0e0e0;
  margin-bottom: 20px;
}
.draggable-item {
  padding: 10px;
  margin: 5px;
  background: #f0f0f0;
  cursor: move;
}
</style>