element-ui 单选框change

<el-radio
  v-model="radio"
  　　　　　　　　
  :label="item.id"
  v-for="(item,index) in radioArr"
  @change="radioChange"
  :key="index"
>
  {{item.name}}
</el-radio>



Data(){
    Return{
radioArr:[
  {
    name:"精确试算",
    id:"1"
  },
  {
    name:"模糊试算",
    id:"2"
  }
],
    }
}


methods:{
  radioChange:function(val){
    console.log(val)

  }