vue模块拖拽效果的实现代码

<template>
 <div>
 <div @mousedown="move($event,index)" v-for="(x,index) in i">
 <span v-if="index+1 !== i.length">{{index+1}}</span>
 <input v-model="x.input">
 </div>
 {{i}}
 </div>
</template>

<script>
 export default {
 name: "index",
 data(){
 return{
 positionX:0,
 positionY:0,
 i:[
 {input:''}
 ]
 }
 },
 methods:{
 move(e,x){
 let odiv = e.target; //获取目标元素
 //算出鼠标相对元素的位置
 let disX = e.clientX - odiv.offsetLeft;
 let disY = e.clientY - odiv.offsetTop;
 let flag = true;
 document.onmousemove = (e)=>{ //鼠标按下并移动的事件
 if(flag && x === this.i.length-1){
 flag = false;
 this.i.push({input:''})
 }
 //用鼠标的位置减去鼠标相对元素的位置，得到元素的位置
 let left = e.clientX - disX;
 let top = e.clientY - disY;
 //绑定元素位置到positionX和positionY上面
 this.positionX = top;
 this.positionY = left;
 //移动当前元素
 odiv.style.left = left + 'px';
 odiv.style.top = top + 'px';
 };
 document.onmouseup = (e) => {
 document.onmousemove = null;
 document.onmouseup = null;
 };
 }
 }
 }
</script>

<style scoped>
 .view{
 position: absolute;
 top: 0;
 bottom: 0;
 left: 0;
 right: 0;
 background: #f8f8f8;
 .x{
 width: 250px;
 height: 50px;
 top: 50px;
 left: 10px;
 position: absolute;
 background: red;
 color: yellow;
 }
 }
</style>