elementUI 中 Form 組件提供了表單驗(yàn)證的功能，只需要通過?rules?屬性傳入約定的驗(yàn)證規(guī)則，并將 Form-Item 的?prop?屬性設(shè)置為需校驗(yàn)的字段名即可。
（1）常用表單驗(yàn)證
<template>
<el-form :model="ruleForm" :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
<el-form-item label="活動名稱" prop="user">
<el-input v-model="ruleForm.user"></el-input>
</el-form-item>
<el-form-item label="活動名稱" prop="password">
<el-input v-model="ruleForm.password"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm('ruleForm')">登錄</el-button>
<el-button @click="resetForm('ruleForm')">重置</el-button>
</el-form-item>
</el-form>
</template>
<script>
export default {
data() {
return {
ruleForm: {
user: '',
password: '',
},
rules: {
user: [
{ required: true, message: '請輸入賬號', trigger: 'blur' },
{ min: 3, max: 5, message: '長度在 3 到 5 個(gè)字符', trigger: 'blur' }
],
password: [
{ required: true, message: '請輸入密碼', trigger: 'change' },
{ min: 8, max: 16, message: '長度在 8 到 16 個(gè)字符', trigger: 'blur' }
],
}
};
},
methods: {
submitForm(formName) {
this.$refs[formName].validate((valid) => {
if (valid) {
alert('submit!');
} else {
console.log('error submit!!');
return false;
}
});
},
resetForm(formName) {
this.$refs[formName].resetFields();
}
}
}
</script>（2）自定義驗(yàn)證規(guī)則（關(guān)鍵字：validator）
?有些需要自定義的校驗(yàn)規(guī)則可以作為變量寫在data中，然后賦值給validator字段
?文章來源地址http://www.zghlxwxcb.cn/news/detail-516210.html
<template>
<el-form :model="ruleForm" status-icon :rules="rules" ref="ruleForm" label-width="100px" class="demo-ruleForm">
<el-form-item label="密碼" prop="pass">
<el-input type="password" v-model="ruleForm.pass" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="確認(rèn)密碼" prop="checkPass">
<el-input type="password" v-model="ruleForm.checkPass" autocomplete="off"></el-input>
</el-form-item>
<el-form-item label="年齡" prop="age">
<el-input v-model.number="ruleForm.age"></el-input>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm('ruleForm')">提交</el-button>
<el-button @click="resetForm('ruleForm')">重置</el-button>
</el-form-item>
</el-form>
</template>
<script>
export default {
data() {
var checkAge = (rule, value, callback) => {
if (!value) {
return callback(new Error('年齡不能為空'));
}
setTimeout(() => {
if (!Number.isInteger(value)) {
callback(new Error('請輸入數(shù)字值'));
} else {
if (value < 18) {
callback(new Error('必須年滿18歲'));
} else {
callback();
}
}
}, 1000);
};
var validatePass = (rule, value, callback) => {
if (value === '') {
callback(new Error('請輸入密碼'));
} else {
if (this.ruleForm.checkPass !== '') {
this.$refs.ruleForm.validateField('checkPass');
}
callback();
}
};
var validatePass2 = (rule, value, callback) => {
if (value === '') {
callback(new Error('請?jiān)俅屋斎朊艽a'));
} else if (value !== this.ruleForm.pass) {
callback(new Error('兩次輸入密碼不一致!'));
} else {
callback();
}
};
return {
ruleForm: {
pass: '',
checkPass: '',
age: ''
},
rules: {
pass: [
{ required: true, validator: validatePass, trigger: 'blur' }
],
checkPass: [
{ required: true, validator: validatePass2, trigger: 'blur' }
],
age: [
{ required: true, validator: checkAge, trigger: 'blur' }
]
}
};
},
methods: {
submitForm(formName) {
this.$refs[formName].validate((valid) => {
if (valid) {
alert('submit!');
} else {
console.log('error submit!!');
return false;
}
});
},
resetForm(formName) {
this.$refs[formName].resetFields();
}
}
}
</script>（3）動態(tài)表單驗(yàn)證
實(shí)際開發(fā)中很常見的需求，此時(shí)用rules、prop直接寫就對應(yīng)不上表單mode綁定的對象上的屬性，所以需要用循環(huán)的方式找到要校驗(yàn)的字段所在數(shù)據(jù)中的索引，然后再以字符串拼接的方式連上校驗(yàn)字段名稱：
?
文章來源：http://www.zghlxwxcb.cn/news/detail-516210.html
?
<template>
<div class="container">
<el-form :model="form" ref="formRef" label-width="100px">
<el-form-item
prop="email"
label="郵箱"
:rules="[
{ required: true, message: '請輸入郵箱地址', trigger: 'blur' },
{ type: 'email', message: '請輸入正確的郵箱地址', trigger: ['blur', 'change'] }
]">
<el-input v-model="form.email"></el-input>
</el-form-item>
<el-form-item class="line-item"
v-for="(item, index) in form.domains"
:label="'域名' + index"
:key="item.key"
:prop="'domains.' + index + '.value'"
:rules="{
required: true, message: '域名不能為空', trigger: 'blur'
}">
<el-input v-model="item.value"></el-input>
<el-button @click.prevent="removeDomain(index)">刪除</el-button>
</el-form-item>
<el-form-item>
<el-button type="primary" @click="submitForm('formRef')">提交</el-button>
<el-button @click="addDomain">新增域名</el-button>
<el-button @click="resetForm('formRef')">重置</el-button>
</el-form-item>
</el-form>
</div>
</template>
<script>
export default {
data() {
return {
form: {
domains: [{
value: ''
}],
email: ''
}
};
},
methods: {
submitForm(formName) {
this.$refs[formName].validate((valid) => {
if (valid) {
alert('submit!');
} else {
console.log('error submit!!');
return false;
}
});
},
resetForm(formName) {
this.$refs[formName].resetFields();
},
removeDomain(index) {
this.form.domains.splice(index, 1)
},
addDomain() {
this.form.domains.push({
value: '',
key: Date.now()
});
}
}
}
</script>
<style lang="less" scoped>
.container{
height: 100%;
background-color: #fff;
padding: 20px 100px;
.line-item{
/deep/.el-form-item__content{
display: flex;
}
}
}
</style>到了這里，關(guān)于elementUI表單驗(yàn)證之動態(tài)表單驗(yàn)證的文章就介紹完了。如果您還想了解更多內(nèi)容，請?jiān)谟疑辖撬阉鱐OY模板網(wǎng)以前的文章或繼續(xù)瀏覽下面的相關(guān)文章，希望大家以后多多支持TOY模板網(wǎng)！
