npm install vue-el-multi-cascader
npm run serve
import Vue from 'vue'
import Element from 'element-ui'
import App from './App.vue'
import ElMultiCascader from 'vue-el-multi-cascader'
import 'element-ui/lib/theme-chalk/index.css';
Vue.config.productionTip = false
Vue.config.devtools = true
Vue.use(Element)
Vue.use(ElMultiCascader)
new Vue({
el: '#app',
components: { App },
template: '<App/>'
})
<ElMultiCascader v-model="options"></ElMultiCascader>