vue动态添加表单validateField验证

 1   <template>
 2     <el-form ref="form" :model="form" :rules="rules" label-width="100px">
 3       <div v-for="(input, index) in inputs" :key="index">
 4         <el-form-item :label="'Name ' + (index + 1)" :prop="'name' + index">
 5           <el-input v-model="input.name" @blur="validateName(index)"></el-input>
 6         </el-form-item>
 7         <el-form-item :label="'Age ' + (index + 1)" :prop="'age' + index">
 8           <el-input v-model.number="input.age" @blur="validateAge(index)"></el-input>
 9         </el-form-item>
10       </div>
11       <el-button type="primary" @click="addInput">Add input</el-button>
12       <el-button type="primary" @click="submitForm">Submit</el-button>
13     </el-form>
14   </template>
15   
16   <script>
17   export default {
18     data() {
19       return {
20         form: {},
21         inputs: [{name: '',age: ''}],
22         rules: {
23             name0: { required: true, pattern: /^[A-Za-z]+$/, message: 'Name can only contain letters', trigger: 'blur' },
24             age0: { required: true, pattern: /^\d+$/, message: 'Age can only contain numbers', trigger: 'blur' },
25         }
26       }
27     },
28     methods: {
29       addInput() {
30         const index = this.inputs.length
31         this.inputs.push({ name: '', age: '' })
32         this.$set(this.form, `name${index}`, '')
33         this.$set(this.form, `age${index}`, '')
34         this.$set(this.rules, `name${index}`, { required: true, pattern: /^[A-Za-z]+$/, message: 'Name can only contain letters', trigger: 'blur' })
35         this.$set(this.rules, `age${index}`, { required: true, pattern: /^\d+$/, message: 'Age can only contain numbers', trigger: 'blur' })
36       },
37       validateName(index) {
38         this.$refs.form.validateField(`name${index}`)
39       },
40       validateAge(index) {
41         this.$refs.form.validateField(`age${index}`)
42       },
43       submitForm() {
44         this.$refs.form.validate(valid => {
45           if (valid) {
46             // submit form
47           } else {
48             console.log('validation failed')
49           }
50         })
51       }
52     }
53   }
54   </script>
55