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vue实现拖拽div

2026-02-11 01:38:00VUE

Vue 实现拖拽 div 的方法

使用 HTML5 拖拽 API

HTML5 提供了原生的拖拽 API，可以通过 draggable 属性和相关事件来实现拖拽功能。

<template>
  <div
    draggable="true"
    @dragstart="handleDragStart"
    @dragend="handleDragEnd"
    @dragover="handleDragOver"
    @drop="handleDrop"
    class="draggable-div"
  >
    拖拽我
  </div>
</template>

<script>
export default {
  methods: {
    handleDragStart(e) {
      e.dataTransfer.setData('text/plain', e.target.id);
      e.target.classList.add('dragging');
    },
    handleDragEnd(e) {
      e.target.classList.remove('dragging');
    },
    handleDragOver(e) {
      e.preventDefault();
    },
    handleDrop(e) {
      e.preventDefault();
      const id = e.dataTransfer.getData('text/plain');
      const draggableElement = document.getElementById(id);
      e.target.appendChild(draggableElement);
    }
  }
};
</script>

<style>
.draggable-div {
  width: 100px;
  height: 100px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  cursor: move;
}
.dragging {
  opacity: 0.5;
}
</style>

使用第三方库 vue-draggable

vue-draggable 是一个基于 Sortable.js 的 Vue 拖拽库，适用于列表拖拽和元素拖拽。

安装依赖：

npm install vuedraggable

使用示例：

<template>
  <draggable v-model="list" @end="onDragEnd">
    <div v-for="item in list" :key="item.id" class="draggable-item">
      {{ item.name }}
    </div>
  </draggable>
</template>

<script>
import draggable from 'vuedraggable';

export default {
  components: { draggable },
  data() {
    return {
      list: [
        { id: 1, name: 'Item 1' },
        { id: 2, name: 'Item 2' },
        { id: 3, name: 'Item 3' }
      ]
    };
  },
  methods: {
    onDragEnd() {
      console.log('拖拽结束', this.list);
    }
  }
};
</script>

<style>
.draggable-item {
  padding: 10px;
  margin: 5px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  cursor: move;
}
</style>

自定义拖拽实现

通过鼠标事件（mousedown、mousemove、mouseup）实现自定义拖拽功能。

vue实现拖拽div

<template>
  <div
    ref="draggableDiv"
    class="draggable-div"
    @mousedown="startDrag"
  >
    拖拽我
  </div>
</template>

<script>
export default {
  data() {
    return {
      isDragging: false,
      offsetX: 0,
      offsetY: 0
    };
  },
  methods: {
    startDrag(e) {
      this.isDragging = true;
      this.offsetX = e.clientX - this.$refs.draggableDiv.getBoundingClientRect().left;
      this.offsetY = e.clientY - this.$refs.draggableDiv.getBoundingClientRect().top;
      document.addEventListener('mousemove', this.drag);
      document.addEventListener('mouseup', this.stopDrag);
    },
    drag(e) {
      if (this.isDragging) {
        this.$refs.draggableDiv.style.left = `${e.clientX - this.offsetX}px`;
        this.$refs.draggableDiv.style.top = `${e.clientY - this.offsetY}px`;
      }
    },
    stopDrag() {
      this.isDragging = false;
      document.removeEventListener('mousemove', this.drag);
      document.removeEventListener('mouseup', this.stopDrag);
    }
  },
  mounted() {
    this.$refs.draggableDiv.style.position = 'absolute';
    this.$refs.draggableDiv.style.left = '0px';
    this.$refs.draggableDiv.style.top = '0px';
  }
};
</script>

<style>
.draggable-div {
  width: 100px;
  height: 100px;
  background-color: #f0f0f0;
  border: 1px solid #ccc;
  cursor: move;
}
</style>