// html
<el-form-item label="角色名称" required prop="roleName">
 <el-input v-model="params.roleName"></el-input>  
</el-form-item>

// js
{ trigger: 'blur', message: '角色名称为必填项' }

// js
{ required: true, trigger: 'blur', message: '角色名称为必填项' }

// 进行异步表单验证
async validateData () {
 this.formValidatePromiseArr = []
 this.formList.map((form, index) => {
  this.validateEachForm(form, `form${index}`)
 })
 // 如果没有全部验证成功，则进入捕获的错误处理
 try {
  await Promise.all(this.formValidatePromiseArr)
  console.log('finish')
  this.next()
 } catch (error) {
  console.log(error)
 }
},
// 校验每个独立表单数据
validateEachForm (form, name) {
 let formResult = new Promise((resolve, reject) => {
  // 利用ref取到要验证的表单
  this.$refs[name][0].validate((valid) => {
   if (valid) {
    resolve()
   } else {
    console.log(`${name}的数据不完整`)
    reject()
   }
  })
 })
 this.formValidatePromiseArr.push(formResult)
}

// html
<el-form-item label="年龄信息" prop="info.age">
 <el-input v-model="form.info.age"></el-input>  
</el-form-item>

// js
rules: {
 name: [{required: true, trigger: 'blur', message: 'required'}],
 'info.age': [{required: true, trigger: 'blur', message: 'required'}]
},

// html
<div v-for="info in form.infoList">
 <el-form-item label="年龄信息" :prop="`infoList[${index}].age`" :rules="rules.age">
  <el-input v-model="info.age"></el-input>  
 </el-form-item>
</div>

// js
rules: {
 age: [{required: true, trigger: 'blur', message: 'required'}]
},