创建vue项目:

vue init webpack veecd ./vee npm run dev # oryarn run dev

安装 VeeValidate

npm install vee-validate --save# oryarn add vee-validate --save

本文中使用的 VeeValidate 版本为 2.1.5

在 App.vue 中引入

import VeeValidate from 'vee-validate';Vue.use(VeeValidate);

例子

第一个测试例子

<template> <div class="test1"> <div> <input type="text" name="nickname" v-model="formData.nickname" v-validate="'required|min:3|max:10'" > <p>{{errors.first('nickname')}}</p> </div> <div> <button @click="handleSubmit">Submit</button> </div> </div></template><script> export default { name: "test1", data() { return { formData: { nickname: '', password: '', } } }, methods: { handleSubmit() { this.$validator.validate() .then((valid) => { if (true === valid) { console.log('验证通过'); } else { console.log(this.$validator.errors.all()); } }) } } }</script><style scoped lang="css"> .test1 { width: 900px; margin: 0 auto; }</style>

更多配置请参考官网!

我们只是用些常用配置和常用的验证!

中文配置

全局配置

import VeeValidate, {Validator} from 'vee-validate';import zh_CN from 'vee-validate/dist/locale/zh_CN';Vue.use(VeeValidate, { dictionary: { zh_CN: zh_CN }});Validator.localize('zh_CN');

这样就可以使用中文提示了!

自定义错误提示

<template> <div class="test2"> <div><input type="text" v-model="formData.nickname" data-vv-name="nickname" v-validate="'required|min:3|max:10'"> </div> <div>{{errors.first('nickname')}}</div> <div><input type="text" v-model="formData.password" data-vv-name="password" v-validate="'required|min:5|max:200'"> </div> <div>{{errors.first('password')}}</div> <div> <button @click="handleSubmit">Submit</button> </div> </div></template><script> const validate = { custom: { nickname: { required: () => '昵称不得为空', //写法1 min: "昵称不得小于3个字符", //写法2 max: () => '昵称不得大于10个字符' }, password: { required: () => '密码不得为空', min: "密码不得小于5个字符", max: () => '密码不得大于200个字符' } }, }; export default { name: "test2", data() { return { formData: { nickname: '', password: '', } } }, methods: { handleSubmit() { this.$validator.validate() .then((valid) => { if (true === valid) { console.log('验证通过'); } else { console.log(this.$validator.errors.all()); } }) } }, mounted() { this.$validator.localize('zh_CN', validate); } }</script>

自定义验证规则

<template> <div class="test2"> <div><input type="text" v-model="formData.nickname" data-vv-name="nickname" v-validate="'required|min:3|max:10'"> </div> <div>{{errors.first('nickname')}}</div> <div><input type="text" v-model="formData.password" data-vv-name="password" v-validate="'required|min:5|max:200'"> </div> <div>{{errors.first('password')}}</div> <div><input type="text" v-model="formData.re_password" data-vv-name="re_password" v-validate="'required|confirm'"> </div> <div>{{errors.first('re_password')}}</div> <div><input type="text" v-model="formData.mobile" data-vv-name="mobile" v-validate="'required|mobile'"> </div> <div>{{errors.first('mobile')}}</div> <div> <button @click="handleSubmit">Submit</button> </div> </div></template><script> const validate = { custom: { nickname: { required: () => '昵称不得为空', //写法1 min: "昵称不得小于3个字符", //写法2 max: () => '昵称不得大于10个字符' }, password: { required: () => '密码不得为空', min: "密码不得小于5个字符", max: () => '密码不得大于200个字符' }, re_password: { required: () => '请再次输入密码!', }, mobile: { required: () => '请输入手机号码!', } }, }; export default { name: "test3", data() { return { formData: { nickname: '', password: '', re_password: '', mobile: '' } } }, methods: { handleSubmit() { this.$validator.validate() .then((valid) => { if (true === valid) { console.log('验证通过'); } else { console.log(this.$validator.errors.all()); } }) } }, mounted() { this.$validator.localize('zh_CN', validate); this.$validator.extend('mobile', { getMessage: field => '手机号有误', validate: value => { return /^((13|14|15|17|18)[0-9]{1}\d{8})$/.test(value) } }) this.$validator.extend('confirm', { getMessage: field => '两次密码输入不一致', validate: value => { return value === this.formData.password } }) } }</script>

显示第一个错误!

有时候我们需要在弹出层中提示用户 所以要显示第一个错误

this.$validator.errors.items[0].msg

例子 发验证码和注册!

这个例子中发验证码是一个验证 注册又是一个验证 所以有点意义!

在发送验证码的时候需要验证手机号码和图形验证码 注册的时候需要验证除图形验证码之外的数据

template

<template> <div class="reg"> <div class="form_item"> <div class="input"> <input type="text" name="mobile" data-vv-name="mobile" v-model="mobile" v-validate="'required|mobile'" placeholder="手机号码" > </div> <div class="err">{{errors.first('mobile')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" v-model="img_captcha" name="img_captcha" placeholder="图形验证码" v-validate="'required'" > </div> <div class="err">{{errors.first('img_captcha')}}</div> </div> <div class="form_item"> <div class="input send_sms"> <input type="text" v-validate="'required|length:6'" v-model="sms_captcha" name="sms_captcha" placeholder="短信验证码" > <button class="send_sms_btn" @click="handleSendSms">获取验证码</button> </div> <div class="err">{{errors.first('sms_captcha')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="password" v-validate="'required|min:8'" v-model="password" placeholder="登录密码" ref="password" > </div> <div class="err">{{errors.first('password')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="re_password" v-validate="'required|confirmed:password'" v-model="re_password" placeholder="再次输入登录密码" ></div> <div class="err">{{errors.first('re_password')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="nickname" v-validate="'required|min:3|max:10'" v-model="nickname" placeholder="请输入昵称" ></div> <div class="err">{{errors.first('nickname')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="id_card" v-validate="'required|id_card'" v-model="id_card" placeholder="请输入身份证号码" ></div> <div class="err">{{errors.first('id_card')}}</div> </div> <div class="form_item"> <div class="input"> <input type="date" name="birthday" v-validate="'required|date_format:YYYY-MM-DD'" v-model="birthday" placeholder="请输入生日" ></div> <div class="err">{{errors.first('birthday')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="url" v-validate="'required|url'" v-model="url" placeholder="请输入个人网址" ></div> <div class="err">{{errors.first('url')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="email" v-validate="'required|email'" v-model="email" placeholder="请输入电子邮箱" ></div> <div class="err">{{errors.first('email')}}</div> </div> <div class="form_item"> <div class="input"> <input type="text" name="age" v-validate="'required|between:18,60'" v-model="age" placeholder="请输入年龄" ></div> <div class="err">{{errors.first('age')}}</div> </div> <div class="form_item"> <button class="reg_btn" @click="handleSubmit">注册</button> </div> </div></template>

style 代码(这个是随便写的 原生css大家不要吐槽哈)

<style> .err { color: red; font-size: 12px; text-align: left; } .reg { width: 500px; margin: 0 auto; } .send_sms { position: relative; } .send_sms_btn { position: absolute; width: 100px; height: 30px; right: -11px; top: 2px; cursor: pointer; border: none; border-radius: 4px; background-color: #e4393c; outline: none; color: #fff; } .form_item { margin-bottom: 10px; width: 400px; } input { width: 400px; height: 30px; border: 1px solid #999; border-radius: 4px; outline: none; padding-left: 10px; } .reg_btn { width: 100px; height: 30px; border: none; border-radius: 4px; background-color: #e4393c; outline: none; cursor: pointer; color: #fff; }</style>

js

<script> import {messages} from '../validate/reg' export default { name: "reg", data() { return { url: '', age: '', email: '', birthday: '', id_card: '', nickname: '', mobile: '', img_captcha: '', sms_captcha: '', password: '', re_password: '', } }, mounted() { this.$validator.localize('zh_CN', messages); this.$validator.extend('mobile', { getMessage: field => '手机号有误', validate: value => { return /^((13|14|15|17|18)[0-9]{1}\d{8})$/.test(value) } }); this.$validator.extend('id_card', { getMessage: field => '身份证号码格式有误', validate: value => { return /(^\d{15}$)|(^\d{18}$)|(^\d{17}(\d|X|x)$)/.test(value) } }); }, methods: { handleSubmit() { this.$validator.errors.clear(); this.$validator.validateAll({ mobile: this.mobile, password: this.password, sms_captcha: this.sms_captcha, re_password: this.re_password, url: this.url, age: this.age, email: this.email, birthday: this.birthday, id_card: this.id_card, nickname: this.nickname, }).then((valid) => { console.log(valid); if (true === valid) { console.log('验证通过'); } else { console.log(this.$validator.errors.all()); } }); }, handleSendSms() { this.$validator.errors.clear(); this.$validator.validateAll({ mobile: this.mobile, img_captcha: this.img_captcha }).then((valid) => { console.log(valid); if (true === valid) { console.log('验证通过'); } else { console.log(this.$validator.errors.all()); } }); } } }</script>

外部引入的js (自定义提示内容)

export const messages = { custom: { mobile: { required: () => '请输入手机号码!', mobile: () => '手机号码有误', }, img_captcha: { required: () => '请输入图形验证码!', }, sms_captcha: { required: () => '请输短信验证码!', length: () => '短信验证码为6位数字' }, password: { required: () => '密码不得为空', min: () => '密码不得小于8个字符', }, re_password: { required: () => '请再次输入密码!', confirmed: () => '两次密码输入不一致' }, nickname: { required: () => '请输入昵称', min: () => '昵称最小为3位字符', max: (field, params) => { return `昵称最大为${params[0]}位字符`; } }, id_card: { required: "身份证号码不得为空" }, birthday: { required: "请选择出生日期", date_format: "出生日期有误" }, url: { required: () => "请输入个人网址", url: () => "网址输入有误" }, email: { required: () => "请输入电子邮箱", email: () => "电子邮箱输入有误" }, age: { required: () => "请输入年龄", between: () => "年龄必须在18-60岁之间" } },};

扩展内容

自定义错误信息中显示配置验证规则中的参数

export const messages = { custom: { nickname: { required: () => "请输入年龄", between: (fiield,params) => `年龄必须在${params[0]}-${params[1]}岁之间" } },};

规则里面第一个参数是字段名称 第二个参数是验证规则后面的参数;

验证指定字段

validateAll(field Object) validateAll({mobile:this.moble});

还可以使用 data-vv-scope 来指定 但是该方法并不适用一些场景;

显示错误信息的时候必须要指定scope的值 不然不会显示错误信息

以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。