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今天小編給大家分享一下vue動態添加表單validateField驗證功能如何實現的相關知識點，內容詳細，邏輯清晰，相信大部分人都還太了解這方面的知識，所以分享這篇文章給大家參考一下，希望大家閱讀完這篇文章后有所收獲，下面我們一起來了解一下吧。
vue動態添加表單validateField驗證，代碼如下所示：
<template>
<el-form ref="form" :model="form" :rules="rules" label-width="100px">
<div v-for="(input, index) in inputs" :key="index">
<el-form-item :label="'Name ' + (index + 1)" :prop="'name' + index">
<el-input v-model="input.name" @blur="validateName(index)"></el-input>
</el-form-item>
<el-form-item :label="'Age ' + (index + 1)" :prop="'age' + index">
<el-input v-model.number="input.age" @blur="validateAge(index)"></el-input>
</el-form-item>
</div>
<el-button type="primary" @click="addInput">Add input</el-button>
<el-button type="primary" @click="submitForm">Submit</el-button>
</el-form>
</template>
<script>
export default {
data() {
return {
form: {},
inputs: [{name: '',age: ''}],
rules: {
name0: { required: true, pattern: /^[A-Za-z]+$/, message: 'Name can only contain letters', trigger: 'blur' },
age0: { required: true, pattern: /^\d+$/, message: 'Age can only contain numbers', trigger: 'blur' },
}
}
},
methods: {
addInput() {
const index = this.inputs.length
this.inputs.push({ name: '', age: '' })
this.$set(this.form, `name${index}`, '')
this.$set(this.form, `age${index}`, '')
this.$set(this.rules, `name${index}`, { required: true, pattern: /^[A-Za-z]+$/, message: 'Name can only contain letters', trigger: 'blur' })
this.$set(this.rules, `age${index}`, { required: true, pattern: /^\d+$/, message: 'Age can only contain numbers', trigger: 'blur' })
},
validateName(index) {
this.$refs.form.validateField(`name${index}`)
},
validateAge(index) {
this.$refs.form.validateField(`age${index}`)
},
submitForm() {
this.$refs.form.validate(valid => {
if (valid) {
// submit form
} else {
console.log('validation failed')
}
})
}
}
}
</script>可以使用 Element UI 的表單組件結合 Vue 的動態組件來實現動態添加多組輸入框，并對每個輸入框進行校驗。Element UI 提供了很多內置的校驗規則和提示信息，可以方便地應用到表單中。
首先，我們需要在 Vue 實例中聲明一個 inputs 數組來存儲每個輸入組的數據。在添加輸入組時，我們只需要向 inputs 數組中添加一個新的對象即可。
在模板中，我們使用 Element UI 的表單組件來渲染輸入框，并使用 v-for 指令循環渲染多組輸入框。在每個輸入框中，我們使用 v-model 指令將輸入值綁定到 inputs 數組中的數據屬性上。對于 name 和 age 輸入框，我們使用 pattern 規則來進行校驗，并在 rules 對象中提供了相應的錯誤提示信息。在 checkNameInput 和 checkAgeInput 方法中，我們調用 $refs.form.validateField 方法來手動觸發校驗，并將當前輸入對象作為參數傳遞進去。
最后，我們需要在 Vue 實例中聲明一個 form 對象來維護表單數據，并將 rules 對象傳遞給 el-form 組件的 rules 屬性。這樣，每次輸入框的值發生變化時，就會自動觸發 Element UI 的校驗機制，并顯示相應的錯誤提示信息。
補充：vue動態表單添加表單驗證
<el-form ref="conditionListForm" :rules="ConditionListRules" :model="scope.row.conditionListForm">
<el-table
ref="conditionListDia"
:data="scope.row.conditionListForm.conditionListDia"
border
:header-cell-
size="mini"
>
<el-table-column label="限制條件名稱" align="center">
<el-table-column
label="條件組合"
align="center"
size="mini"
min-width="40"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionRelation' " :rules="ConditionListRules.conditionRelation">
<el-select
v-model="scopeChild.row.conditionRelation"
:disabled="scope.row.conditionListForm.conditionListDia.length > 1 || scope.row.id > 0"
size="mini"
placeholder="請選擇"
clearable
@change="showconditionRelation(scopeChild.row.conditionRelation)"
>
<el-option
v-for="item in compositionConditionList"
:key="item.key"
:disabled="item.baseDataStatus==='0'"
:label="item.label"
:value="item.key"
/>
</el-select>
</el-form-item>
</template>
</el-table-column>
<el-table-column
label="條件分組"
size="mini"
align="center"
min-width="30"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].medalConditionClassname' " :rules="ConditionListRules.medalConditionClassname">
<el-select
v-model="scopeChild.row.medalConditionClassname"
:disabled="scope.row.id > 0"
size="mini"
placeholder="請選擇"
clearable
@change="defDataClick(scopeChild)"
>
<el-option
v-for="item in fatherNameList"
:key="item.id"
:label="item.medalConditionClassname"
:value="item.id"
/>
</el-select>
</el-form-item>
</template>
</el-table-column>
<el-table-column
label="條件"
size="mini"
align="center"
min-width="40"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionId' " :rules="ConditionListRules.conditionId">
<el-select
v-model="scopeChild.row.conditionId"
size="mini"
:disabled="scope.row.id > 0"
placeholder="請選擇"
clearable
@change="getRelationship(scopeChild.row.conditionId,scopeChild.row.medalConditionClassnameList,scopeChild.row)"
>
<el-option
v-for="item in scopeChild.row.medalConditionClassnameList"
:key="item.defId"
:label="item.medalConditionName"
:value="item.defId"
/>
</el-select>
</el-form-item>
</template>
</el-table-column>
</el-table-column>
<el-table-column
label="運算關系"
align="center"
size="mini"
min-width="50"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionOperation' " :rules="ConditionListRules.conditionOperation">
<el-select
v-model="scopeChild.row.conditionOperation"
size="mini"
placeholder="請選擇"
:disabled="scope.row.id > 0"
clearable
@change="conditionOperationEmpty(scopeChild.row)"
>
<el-option
v-for="item in scopeChild.row.conditionOperationValueList"
:key="item.key"
:disabled="item.baseDataStatus==='0'"
:label="item.value"
:value="item.key"
/>
</el-select>
</el-form-item>
</template>
</el-table-column>
<el-table-column
label="值"
align="center"
size="mini"
min-width="120"
>
<template slot-scope="scopeChild">
<el-form-item v-if="scopeChild.row.medalConditionControlType === '0'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionTrueValueList' " :rules="ConditionListRules.conditionTrueValueList">
<el-select
v-model="scopeChild.row.conditionTrueValueList"
multiple
size="mini"
clearable
placeholder="請選擇"
@change="conditionValueEmpty(scopeChild)"
>
<el-option
v-for="item in scopeChild.row.conditionValueList"
:key="item.value"
:label="item.key"
:value="item.value"
/>
</el-select>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType == '1'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionValue' " :rules="ConditionListRules.conditionValue">
<el-input
v-model="scopeChild.row.conditionValue"
clearable
placeholder="請輸入"
align="center"
size="mini"
maxlength="60"
show-word-limit
@blur="conditionValueEmpty(scopeChild)"
/>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType == '2'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionTrueValueList' " :rules="ConditionListRules.conditionTrueValueList">
<el-date-picker
v-model="scopeChild.row.conditionTrueValueList"
type="daterange"
range-separator="至"
start-placeholder="開始日期"
size="mini"
end-placeholder="結束日期"
/>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType === '3'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionValue' " :rules="ConditionListRules.conditionValue">
<el-select
v-model="scopeChild.row.conditionValue"
size="mini"
clearable
placeholder="請選擇"
@change="conditionValueEmpty(scopeChild)"
>
<el-option
v-for="item in scopeChild.row.conditionValueList"
:key="item.value"
:label="item.key"
:value="item.value"
/>
</el-select>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType === '4'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionTrueValueList' " :rules="ConditionListRules.conditionTrueValueList">
<el-time-picker
v-model="scopeChild.row.conditionTrueValueList"
size="mini"
is-range
clearable
range-separator="至"
start-placeholder="開始時間"
end-placeholder="結束時間"
placeholder="選擇時間范圍"
format="HH:mm"
@change="conditionValueEmpty(scopeChild)"
/>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType == '5'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionValue' " :rules="ConditionListRules.conditionValue">
<el-input-number v-model="scopeChild.row.conditionValue" size="mini" :min="0" label="" @change="conditionValueEmpty(scope)" />
</el-form-item>
</template>
</el-table-column>
<el-table-column
label="操作"
align="center"
min-width="50"
>
<template slot-scope="scopeChild">
<el-button type="text" :disabled="scope.row.id > 0" @click="delCondition(scope.$index,scope.row.conditionListForm.conditionListDia,scopeChild.row,scopeChild.$index)">刪除</el-button>
</template>
</el-table-column>
</el-table>
</el-form>
ConditionListRules: {
conditionRelation: [
{ required: true, message: '條件組合不能為空', trigger: 'change' }
],
medalConditionClassname: [
{ required: true, message: '條件分組不能為空', trigger: 'change' }
],
conditionId: [
{ required: true, message: '條件不能為空', trigger: 'change' }
],
conditionOperation: [
{ required: true, message: '運算關系不能為空', trigger: 'change' }
],
conditionValue: [
{ required: true, message: '值不能為空', trigger: 'change' }
],
conditionTrueValueList: [
{ required: true, message: '值不能為空', trigger: 'change' }
]
},主要就是prop的問題，prop要對應到數據。
以上就是“vue動態添加表單validateField驗證功能如何實現”這篇文章的所有內容，感謝各位的閱讀！相信大家閱讀完這篇文章都有很大的收獲，小編每天都會為大家更新不同的知識，如果還想學習更多的知識，請關注億速云行業資訊頻道。
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