vue点击按钮添加一行dom节点

 如图，最近项目需求，点击添加一行dom节点，包含下拉框和input输入框 ，下面展示一下代码

class="sales-menuItem-ul">

• class="sales-menuItem-li" v-for="(sub,index) in formdata.data" :key='index' >
  
  成本{{`${index+1}`}}
  
  
  class="pur-ret-lime">
  class="vant-menu" active-color="#1989fa">
  "sub.value1" :optiOns="option1" />
  
  

  class="pur-ret-icon">"../../assets/images/icon_more_g.png" alt="">

  
  
  
  
  class="sales-flex flex-betweenCenter">"sub.number1" type="number" />元/本
  
  

return {
formdata:{
data:[
{
value1: 0,
number1: 0.5,
}
]
},
option1:[
{ text: '材料成本', value: 0 },
{ text: '材料成本2', value: 1 },
{ text: '材料成本3', value: 2 },
],
}

methods:{
addTags(){
var that = this
const obj = {
value1: 0,
number1: '',
};
that.formdata.data.push(obj);
},
}

好啦，大功告成！！