vue动态绑定组件子父组件多表单验证功能的实现代码

// 给下拉框绑定下拉列表的索引
<el-select v-model="value" placeholder="请选择" style="float:left" @change="selectNum(value)">
 <el-option
 v-for="item in options"
 :key="item.value"
 :label="item.label"
 :value="item.value">
 </el-option>
</el-select>

// 加载组件：每次下拉框监听则给changValue新赋值，如果下拉options的value从0开始则绑定组件时不用-1
<component :is="componentName[changValue - 1]" ref="subjectChild" @isSubmit="getSubmit"></component>

data(){
 const num = (rule, value, callback) => {
 let num = /^\d+$/
 if(!value){
 return callback(new Error('数量不能为空'))
 }else if(!num.test(value)){
 return callback(new Error('数量必须为数字'))
 }else{
 callback()
 }
 }
 const price = (rule, value, callback) => {
 let num2 = /^\d+$/
 if(!value){
 return callback(new Error('单价不能为空'))
 }else if(!num2.test(value)){
 return callback(new Error('单价必须为数字'))
 }else{
 callback()
 }
 }
 return{
 // 验证
 apple:{
 num: '',
 price: '',
 },
 reg:{
 num: [
 { validator: num, trigger: 'blur' }
 ],
 price: [
 { validator: price, trigger: 'blur' }
 ]
 }
 }
// 验证
 submitForm(){
 this.$refs.apple.validate((valid) => {
 if(valid){
 this.$emit('isSubmit',["subject",true])
 }else{
 this.$emit('isSubmit',["subject",false])
 return false
 }
 })
 }

 // 获取子组件状态
 getSubmit(type){
 this.isRule = type[1]
 },
// 公共数据验证
 submitForm2(){
 // 如果选中了子组件
 if(this.changValue){
 this.$refs.subjectChild.submitForm()
 }
 let _this = this
 let p1 = new Promise((resolve, reject) => {
 _this.$refs.ruleForm.validate((valid) => {
 if(valid){
 resolve()
 }
 })
 })
 if(_this.isRule){
 Promise.all([p1]).then(() => {
 console.log('正确')
 })
 .catch(() => {
 console.log('错误')
 })
 }else{
 console.log('错误')
 }
 },