第一种常用方式：表单上加rules｛object｝
<el-form class="apply-form first-form" :model="formData" :rules="rule" ref="form">
<el-form-item label="姓名" prop="visitorName">
<el-input v-model="formData.visitorName" placeholder="请输入姓名" clearable> </el-input>
</el-form-item>
<el-form-item label="身份证号" prop="cardCode">
<el-input v-model="formData.cardCode" :maxlength="18" placeholder="请输入身份证号" clearable></el-input>
</el-form-item>
</el-form>
这种方式需要在data()中写入rule{},对于需要校验字段prop中的如visitorName写上验证规则，如下：
data() {
return {
formData: {
visitorName: '',
cardType: 1,
cardCode: ''
},
rule: {
visitorName: [
{ required: true, message: '请输入姓名', trigger: 'blur'},
{ min: 2, max: 10, message: '长度在 2 到 10 个字符', trigger: 'blur'},
{ required: true, pattern: /^[\u4e00-\u9fa5_a-zA-Z0-9.·-]+$/, message: '姓名不支持特殊字符', trigger: 'blur'}
],
cardCode: [
{ required: true , message: '请输入身份证号', trigger: 'blur'},
{ min: 15, max: 18, message: '请如实填写18位号码，以供学校保卫科核对', trigger: 'blur'},
{ required: true, pattern: /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/, message: '请输入正确的身份证号码', trigger: 'blur'}
]
}
}
}
其中对于有些需要自定义的校验规则可以作为变量写在data中：
data() {
let reg = /(?!^(\d+|[a-zA-Z]+|[~!@#$%^&*?]+)$)^[\w~!@#$%^&*?]{6,12}$/
var validateNewPwd = (rule, value, callback) => {
if (!reg.test(value)) {
callback(new Error('密码应是6-12位数字、字母或字符！'))
} else if (this.form.oldPasswd === value) {
callback(new Error('新密码与旧密码不可一致！'))
} else {
callback()
}
}
var validateComfirmPwd = (rule, value, callback) => {
if (!reg.test(value)) {
callback(new Error('密码应是6-12位数字、字母或字符！'))
} else if (this.form.newPasswd !== value) {
callback(new Error('确认密码与新密码不一致！'))
} else {
callback()
}
}
return {
form: {
newPasswd: '',
comfirmPwd: ''
},
rules: {
newPasswd: [
{ required: true , message: '请输入新密码' , trigger: 'blur' },
{ validator: validateNewPwd, trigger: 'blur' }
],
comfirmPwd: [
{ required: true , message: '请输入确认密码' , trigger: 'blur' },
{ validator: validateComfirmPwd, trigger: 'blur' }
]
}
}
}
注：可以不在data添加required，在el-form-item里面添加is-required的class类设置必填。在el-form-item里面设置required属性会出现出现xxx is required提示（触发非空校验，在事件blur或是change里面可以清空但要使用setTimeout或是$nextTick）
<template>
<el-form ref="supply" :model="supply" :rules="rules" label-width="157px">
<!-- 增加is-required类 -->
<el-form-item label="联系人手机：" class="is-required" prop="phone">
<el-input v-model="supply.phone"></el-input>
</el-form-item>
</el-form>
</template>
<script>
export default {
name: "FormRequire",
data() {
let checkPhoneNum = (rule, value, callback) => {
let patter = new RegExp(/^1\s*[3456789]\s*(\d\s*){9}$/);
if (value === "") {
return callback(new Error('不能为空'));
} else if (!patter.test(value)) {
return callback(new Error('手机号码格式不正确'));
} else {
callback();
}
};
return {
supply: {
phone: ''
},
rules: {
phone: [
{validator: checkPhoneNum, trigger: 'blur'}
]
}
}
},
watch: {
supply: {
handler(newValue) {
if (!newValue.phone.length) {
this.$refs['supply'].clearValidate('phone');
}
},
deep: true
}
}
}
</script>
第二种方式：在el-form-item单个添加
<el-form-item label="电话号码" class="el-form-item--small has-error" :prop="phoneNum" :rules="[{ required: true, message: '请输入电话号码', trigger: 'blur' }, { required: true, pattern: /^((13|14|15|16|17|18)[0-9]{1}\d{8})|((166|199|198)[0-9]{1}\d{7})$/, message: '请输入正确的电话号码', trigger: 'blur' }]">
<el-input v-model="v.phoneNum" :maxlength="11" placeholder clearable></el-input>
</el-form-item>
第三种方式：动态增减表单项
addPhone() {
let len = this.formData.phoneInfoList.length
this.$set(this.formData.phoneInfoList, len, {
relation: [],
phoneNum: '',
relationType: 0,
schoolId: this.selectedUser.schoolId,
userCode: this.selectedUser.userCode
})
},
deletePhone(item) {
if (this.formData.phoneInfoList.length > 1) {
// 表示先获取这个元素的下标，然后从这个下标开始计算，删除长度为1的元素
this.formData.phoneInfoList.splice(this.formData.phoneInfoList.indexOf(item), 1);
} else {
this.$vux.toast.text('至少保留一个家长亲情号码！')
return false
}
},
这样的rule、prop直接写就对应不上表单mode绑定的对象上的属性，所以在此要用循环的方式找到要校验的字段所在数据中的索引，然后再以字符串拼接的方式连上校验字段名称：
