Element: alway run event select change on dynamic input remove

by xie shine

HTML

<script src="//unpkg.com/vue/dist/vue.js"></script>
<script src="//unpkg.com/[email protected]/lib/index.js"></script>
<div id="app">
  <el-form :model="form" ref="form" label-width="120px" class="demo-dynamic">
    <el-form-item v-for="(domain, index) in form.domains" :label="'Domain' + index" :key="index" :prop="'domains.' + index + '.value'" :rules="{
      required: true, message: 'domain can not be null', trigger: 'blur'
    }">
      <!-- <el-input v-model="domain.value"></el-input> -->
      <el-select v-model="domain.value">
        <el-option label="Zone one" value="one"></el-option>
        <el-option label="Zone two" value="two"></el-option>
				<el-option label="Zone three" value="three"></el-option>
      </el-select>
      <el-button @click.prevent="removeDomain(domain)">Delete</el-button>
    </el-form-item>
    <el-form-item>
      <el-button type="primary" @click="submitForm('dynamicValidateForm')">Submit</el-button>
      <el-button @click="addDomain">New domain</el-button>
    </el-form-item>
  </el-form>
</div>

SCSS

@import url("//unpkg.com/[email protected]/lib/theme-default/index.css");

Babel + JSX

var Main = {
    data() {
      return {
      	values:'',
        form: {
          domains: [{value: ''},{value: ''},{value: ''}],
        }
      };
    },
    watch:{
    	'form.domains':{
        handler(info){
        		let v = info.map(o=>o.value).join('');
        		if(this.values !== v){
            	this.values = v;
            	this.selectChange();
            }            
        },
        deep:true
      }
    },
    methods: {
      submitForm(formName) {
        this.$refs[formName].validate((valid) => {
          if (valid) {
            alert('submit!');
          } else {
            console.log('error submit!!');
            return false;
          }
        });
      },
      removeDomain(item) {
        var index = this.form.domains.indexOf(item);
        if (index !== -1) {
          this.form.domains.splice(index, 1);
        }
      },
      addDomain() {
        this.form.domains.push({
          value: ''
        });
      },
			selectChange(){
				alert('changed');
			}
    }
  }
var Ctor = Vue.extend(Main)
new Ctor().$mount('#app')