vue element ui radio 设置默认选择

template:
<el-radio-group  v-model="radio1">
  <el-radio :label="1" >is representing the interests of the Buyer.</el-radio>
  <el-radio :label="2" >is representing the interests of the Buyer.</el-radio>
</el-radio-group>

script:

export default {
  data(){
    return{
      radio1: 1,
    }