啥也不说，贴上代码：
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title></head>
<style>
ul {
min-height: 100px;
width: 200px;
margin: 20px auto;
background: #eee;
}
li {
min-height: 2em;
margin-top: 10px;
background: #abcded;
}
/组件过渡类/
.drog-move {
transition: transform 1s;
}
</style>
<body>
<div id="app">
<transition-group name="drog" tag="ul">
<li draggable="true" v-for="(item, index) in lists" @dragstart="dragStart($event, index)" @dragover="allowDrop" @drop="drop($event, index)" v-bind:key="item">{{item}}</li>
</transition-group></div>
</body>
<script src="vue.min.js"></script>
<script>
new Vue({
el: '#app',
data: {
lists: ['1: apple', '2: banana', '3: orange', '4: melon']
},
methods: {
//取消默认行为
allowDrop(e){
e.preventDefault();
},
//开始拖动
dragStart(e, index){
let tar = e.target;
e.dataTransfer.setData('Text', index);
if (tar.tagName.toLowerCase() == 'li') {
// console.log('drag start')
// console.log('drag Index: ' + index)
}
},
//放置
drop(e, index){
this.allowDrop(e);
// console.log('drop index: ' + index);
//使用一个新数组重新排序后赋给原变量
let arr = this.lists.concat([]),
dragIndex = e.dataTransfer.getData('Text');
temp = arr.splice(dragIndex, 1);
arr.splice(index, 0, temp[0]);
// console.log('sort');
this.lists = arr;
}
}})
</script>
</html>
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