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今天小编给大家分享一下vue动态添加表单validateField验证功能如何实现的相关知识点，内容详细，逻辑清晰，相信大部分人都还太了解这方面的知识，所以分享这篇文章给大家参考一下，希望大家阅读完这篇文章后有所收获，下面我们一起来了解一下吧。
vue动态添加表单validateField验证，代码如下所示：
<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 的表单组件结合 Vue 的动态组件来实现动态添加多组输入框，并对每个输入框进行校验。Element UI 提供了很多内置的校验规则和提示信息，可以方便地应用到表单中。
首先，我们需要在 Vue 实例中声明一个 inputs 数组来存储每个输入组的数据。在添加输入组时，我们只需要向 inputs 数组中添加一个新的对象即可。
在模板中，我们使用 Element UI 的表单组件来渲染输入框，并使用 v-for 指令循环渲染多组输入框。在每个输入框中，我们使用 v-model 指令将输入值绑定到 inputs 数组中的数据属性上。对于 name 和 age 输入框，我们使用 pattern 规则来进行校验，并在 rules 对象中提供了相应的错误提示信息。在 checkNameInput 和 checkAgeInput 方法中，我们调用 $refs.form.validateField 方法来手动触发校验，并将当前输入对象作为参数传递进去。
最后，我们需要在 Vue 实例中声明一个 form 对象来维护表单数据，并将 rules 对象传递给 el-form 组件的 rules 属性。这样，每次输入框的值发生变化时，就会自动触发 Element UI 的校验机制，并显示相应的错误提示信息。
补充：vue动态表单添加表单验证
<el-form ref="conditionListForm" :rules="ConditionListRules" :model="scope.row.conditionListForm">
<el-table
ref="conditionListDia"
:data="scope.row.conditionListForm.conditionListDia"
border
:header-cell-
size="mini"
>
<el-table-column label="限制条件名称" align="center">
<el-table-column
label="条件组合"
align="center"
size="mini"
min-width="40"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$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="请选择"
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="条件分组"
size="mini"
align="center"
min-width="30"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].medalConditionClassname' " :rules="ConditionListRules.medalConditionClassname">
<el-select
v-model="scopeChild.row.medalConditionClassname"
:disabled="scope.row.id > 0"
size="mini"
placeholder="请选择"
clearable
@change="defDataClick(scopeChild)"
>
<el-option
v-for="item in fatherNameList"
:key="item.id"
:label="item.medalConditionClassname"
:value="item.id"
/>
</el-select>
</el-form-item>
</template>
</el-table-column>
<el-table-column
label="条件"
size="mini"
align="center"
min-width="40"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionId' " :rules="ConditionListRules.conditionId">
<el-select
v-model="scopeChild.row.conditionId"
size="mini"
:disabled="scope.row.id > 0"
placeholder="请选择"
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="运算关系"
align="center"
size="mini"
min-width="50"
>
<template slot-scope="scopeChild">
<el-form-item :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionOperation' " :rules="ConditionListRules.conditionOperation">
<el-select
v-model="scopeChild.row.conditionOperation"
size="mini"
placeholder="请选择"
:disabled="scope.row.id > 0"
clearable
@change="conditionOperationEmpty(scopeChild.row)"
>
<el-option
v-for="item in scopeChild.row.conditionOperationValueList"
:key="item.key"
:disabled="item.baseDataStatus==='0'"
:label="item.value"
:value="item.key"
/>
</el-select>
</el-form-item>
</template>
</el-table-column>
<el-table-column
label="值"
align="center"
size="mini"
min-width="120"
>
<template slot-scope="scopeChild">
<el-form-item v-if="scopeChild.row.medalConditionControlType === '0'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionTrueValueList' " :rules="ConditionListRules.conditionTrueValueList">
<el-select
v-model="scopeChild.row.conditionTrueValueList"
multiple
size="mini"
clearable
placeholder="请选择"
@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.$index + '].conditionValue' " :rules="ConditionListRules.conditionValue">
<el-input
v-model="scopeChild.row.conditionValue"
clearable
placeholder="请输入"
align="center"
size="mini"
maxlength="60"
show-word-limit
@blur="conditionValueEmpty(scopeChild)"
/>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType == '2'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionTrueValueList' " :rules="ConditionListRules.conditionTrueValueList">
<el-date-picker
v-model="scopeChild.row.conditionTrueValueList"
type="daterange"
range-separator="至"
start-placeholder="开始日期"
size="mini"
end-placeholder="结束日期"
/>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType === '3'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionValue' " :rules="ConditionListRules.conditionValue">
<el-select
v-model="scopeChild.row.conditionValue"
size="mini"
clearable
placeholder="请选择"
@change="conditionValueEmpty(scopeChild)"
>
<el-option
v-for="item in scopeChild.row.conditionValueList"
:key="item.value"
:label="item.key"
:value="item.value"
/>
</el-select>
</el-form-item>
<el-form-item v-if="scopeChild.row.medalConditionControlType === '4'" :prop=" 'conditionListDia[' + scopeChild.$index + '].conditionTrueValueList' " :rules="ConditionListRules.conditionTrueValueList">
<el-time-picker
v-model="scopeChild.row.conditionTrueValueList"
size="mini"
is-range
clearable
range-separator="至"
start-placeholder="开始时间"
end-placeholder="结束时间"
placeholder="选择时间范围"
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)">删除</el-button>
</template>
</el-table-column>
</el-table>
</el-form>
ConditionListRules: {
conditionRelation: [
{ required: true, message: '条件组合不能为空', trigger: 'change' }
],
medalConditionClassname: [
{ required: true, message: '条件分组不能为空', trigger: 'change' }
],
conditionId: [
{ required: true, message: '条件不能为空', trigger: 'change' }
],
conditionOperation: [
{ required: true, message: '运算关系不能为空', trigger: 'change' }
],
conditionValue: [
{ required: true, message: '值不能为空', trigger: 'change' }
],
conditionTrueValueList: [
{ required: true, message: '值不能为空', trigger: 'change' }
]
},主要就是prop的问题，prop要对应到数据。
以上就是“vue动态添加表单validateField验证功能如何实现”这篇文章的所有内容，感谢各位的阅读！相信大家阅读完这篇文章都有很大的收获，小编每天都会为大家更新不同的知识，如果还想学习更多的知识，请关注亿速云行业资讯频道。
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