简介

Vue.Draggable是一款基于Sortable.js专门为了适配Vue而开发的一款组件库，可用动拖动排序等一系列功能。如果对于有这方面需求的小伙伴，绝对是一款不可错过的组件库~~~

值得一提的是这个库目前也已经对Vue3做了适配。算是比较良心了，为作者点赞，先看一张来自官网的gif图吧

项目地址

//vue2
https://github.com/SortableJS/Vue.Draggable
//vue3
https://github.com/SortableJS/vue.draggable.next
// live demo
https://sortablejs.github.io/Vue.Draggable/
https://david-desmaisons.github.io/draggable-example/

主要功能

• 全面支持sortable.js的功能
• 支持触摸设备
• 支持拖动和可选文本
• 智能自动滚动
• 支持不同列表之间的拖放
• 无 jquery 依赖性
• 保持同步HTML和数据列表更新
• 兼容 Vue.js 2.0 transition-group

使用

安装

//yarn方式
yarn add vuedraggable
//npm方式
npm i -S vuedraggable

对于Vue2看一个完整的例子

<template>
  <div class="fluid container">
    <div class="form-group form-group-lg panel panel-default">
      <div class="panel-heading">
        <h3 class="panel-title">Sortable control</h3>
      </div>
      <div class="panel-body">
        <div class="checkbox">
          <label><input type="checkbox" v-model="editable">Enable drag and drop</label>
        </div>
        <button type="button" class="btn btn-default" @click="orderList">Sort by original order</button>
      </div>
    </div>

    <div class="col-md-3">
      <draggable class="list-group" tag="ul" v-model="list" v-bind="dragOptions" :move="onMove" @start="isDragging=true" @end="isDragging=false">
        <transition-group type="transition" :name="'flip-list'">
          <li class="list-group-item" v-for="element in list" :key="element.order">
            <i :class="element.fixed? 'fa fa-anchor' : 'glyphicon glyphicon-pushpin'" @click=" element.fixed=! element.fixed" aria-hidden="true"></i>
            {{element.name}}
            <span class="badge">{{element.order}}</span>
          </li>
        </transition-group>
      </draggable>
    </div>

    <div class="col-md-3">
      <draggable element="span" v-model="list2" v-bind="dragOptions" :move="onMove">
        <transition-group name="no" class="list-group" tag="ul">
          <li class="list-group-item" v-for="element in list2" :key="element.order">
            <i :class="element.fixed? 'fa fa-anchor' : 'glyphicon glyphicon-pushpin'" @click=" element.fixed=! element.fixed" aria-hidden="true"></i>
            {{element.name}}
            <span class="badge">{{element.order}}</span>
          </li>
        </transition-group>
      </draggable>
    </div>

    <div class="list-group col-md-3">
      <pre>{{listString}}</pre>
    </div>
    <div class="list-group col-md-3">
      <pre>{{list2String}}</pre>
    </div>
  </div>
</template>

<script>
import draggable from "vuedraggable";
const message = [
  "vue.draggable",
  "draggable",
  "component",
  "for",
  "vue.js 2.0",
  "based",
  "on",
  "Sortablejs"
];
export default {
  name: "hello",
  components: {
    draggable
  },
  data() {
    return {
      list: message.map((name, index) => {
        return { name, order: index + 1, fixed: false };
      }),
      list2: [],
      editable: true,
      isDragging: false,
      delayedDragging: false
    };
  },
  methods: {
    orderList() {
      this.list = this.list.sort((one, two) => {
        return one.order - two.order;
      });
    },
    onMove({ relatedContext, draggedContext }) {
      const relatedElement = relatedContext.element;
      const draggedElement = draggedContext.element;
      return (
        (!relatedElement || !relatedElement.fixed) && !draggedElement.fixed
      );
    }
  },
  computed: {
    dragOptions() {
      return {
        animation: 0,
        group: "description",
        disabled: !this.editable,
        ghostClass: "ghost"
      };
    },
    listString() {
      return JSON.stringify(this.list, null, 2);
    },
    list2String() {
      return JSON.stringify(this.list2, null, 2);
    }
  },
  watch: {
    isDragging(newValue) {
      if (newValue) {
        this.delayedDragging = true;
        return;
      }
      this.$nextTick(() => {
        this.delayedDragging = false;
      });
    }
  }
};
</script>

<style>
.flip-list-move {
  transition: transform 0.5s;
}
.no-move {
  transition: transform 0s;
}
.ghost {
  opacity: 0.5;
  background: #c8ebfb;
}
.list-group {
  min-height: 20px;
}
.list-group-item {
  cursor: move;
}
.list-group-item i {
  cursor: pointer;
}
</style>

总结

对于Vue3的用法和Vue2用法也基本一致，需要注意的地方官网也都给出了说明，大家有什么不明白的地方，可以去查看一下官网，上面讲解的很清楚~好啦，就给大家分享到这里吧

最后祝大家生活愉快，工作顺利~[呲牙][呲牙]