原生拖拽

<template                     v-for="(item,index) in info.data"                     :key="index"                 >

             
　　　　　　　　　　<div
                        class="sub-set"
                        draggable="true"
                        @dragstart="dragstart($event,index)"
                        @dragover="dragover"
                        @drop="drop($event,index)"
                    >

 dragstart(event: any, index: number) {
            this.startIndex = index;
        },
        dragover(event: any,) {
            event.preventDefault();
        },
        drop(event: any, index: number) {
            const moveData = this.info.data.splice(this.startIndex, 1) as any;
            this.info.data.splice(index, 0, moveData[0]);
        },