npm install vue-cascading-address --save

import cascadingAdress from 'vue-cascading-address'
export {
  components: {
    cascadingAddress
  },
  methods: {
    confirmCity(data){
      console.log(data);// { province: 'xxx' , city: 'xxx' , area: 'xxx' }
    }
  }
}

  <cascading-address @confirm="confirmCity"></cascading-address>