<template>  <div class="view">   <div class="x" @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;    //獲取目標元素      //算出鼠標相對元素的位置      let disX = e.clientX - odiv.offsetLeft;      let disY = e.clientY - odiv.offsetTop;      let flag = true;      document.onmousemove = (e)=>{    //鼠標按下并移動的事件       if(flag && x === this.i.length-1){        flag = false;        this.i.push({input:''})       }       //用鼠標的位置減去鼠標相對元素的位置，得到元素的位置       let left = e.clientX - disX;       let top = e.clientY - disY;       //綁定元素位置到positionX和positionY上面       this.positionX = top;       this.positionY = left;       //移動當前元素       odiv.style.left = left + 'px';       odiv.style.top = top + 'px';      };      document.onmouseup = (e) => {       document.onmousemove = null;       document.onmouseup = null;      };     }   }  }</script><style scoped lang="less"> .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>