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vue实现上移下移插件

2026-01-12 07:30:20VUE

实现思路

在Vue中实现上移下移功能，可以通过操作数组元素的顺序来完成。通常需要绑定点击事件，利用数组的splice方法交换元素位置。

基础实现代码

<template>
  <div>
    <ul>
      <li v-for="(item, index) in list" :key="item.id">
        {{ item.name }}
        <button @click="moveUp(index)" :disabled="index === 0">上移</button>
        <button @click="moveDown(index)" :disabled="index === list.length - 1">下移</button>
      </li>
    </ul>
  </div>
</template>

<script>
export default {
  data() {
    return {
      list: [
        { id: 1, name: '项目1' },
        { id: 2, name: '项目2' },
        { id: 3, name: '项目3' },
        { id: 4, name: '项目4' }
      ]
    }
  },
  methods: {
    moveUp(index) {
      if (index > 0) {
        const temp = this.list[index - 1]
        this.$set(this.list, index - 1, this.list[index])
        this.$set(this.list, index, temp)
      }
    },
    moveDown(index) {
      if (index < this.list.length - 1) {
        const temp = this.list[index + 1]
        this.$set(this.list, index + 1, this.list[index])
        this.$set(this.list, index, temp)
      }
    }
  }
}
</script>

封装为可复用组件

可以将上移下移功能封装为独立组件：

vue实现上移下移插件

<!-- MoveableList.vue -->
<template>
  <ul>
    <slot :items="list" :moveUp="moveUp" :moveDown="moveDown"></slot>
  </ul>
</template>

<script>
export default {
  props: {
    value: {
      type: Array,
      required: true
    }
  },
  data() {
    return {
      list: this.value
    }
  },
  watch: {
    value(newVal) {
      this.list = newVal
    },
    list(newVal) {
      this.$emit('input', newVal)
    }
  },
  methods: {
    moveUp(index) {
      if (index > 0) {
        [this.list[index - 1], this.list[index]] = [this.list[index], this.list[index - 1]]
      }
    },
    moveDown(index) {
      if (index < this.list.length - 1) {
        [this.list[index], this.list[index + 1]] = [this.list[index + 1], this.list[index]]
      }
    }
  }
}
</script>

使用封装组件

<template>
  <moveable-list v-model="items">
    <template v-slot="{ items, moveUp, moveDown }">
      <li v-for="(item, index) in items" :key="item.id">
        {{ item.name }}
        <button @click="moveUp(index)" :disabled="index === 0">上移</button>
        <button @click="moveDown(index)" :disabled="index === items.length - 1">下移</button>
      </li>
    </template>
  </moveable-list>
</template>

<script>
import MoveableList from './MoveableList.vue'

export default {
  components: {
    MoveableList
  },
  data() {
    return {
      items: [
        { id: 1, name: '项目A' },
        { id: 2, name: '项目B' },
        { id: 3, name: '项目C' }
      ]
    }
  }
}
</script>

拖拽排序实现

如果需要更直观的交互，可以结合拖拽库实现：

vue实现上移下移插件

<template>
  <div>
    <draggable v-model="list" handle=".handle">
      <div v-for="(item, index) in list" :key="item.id">
        <span class="handle">≡</span>
        {{ item.name }}
      </div>
    </draggable>
  </div>
</template>

<script>
import draggable from 'vuedraggable'

export default {
  components: {
    draggable
  },
  data() {
    return {
      list: [
        { id: 1, name: '项目1' },
        { id: 2, name: '项目2' },
        { id: 3, name: '项目3' }
      ]
    }
  }
}
</script>

<style>
.handle {
  cursor: move;
  margin-right: 10px;
}
</style>