案例参考:https://segmentfault.com/a/1190000008580275
案例参考:https://blog.csdn.net/latency_cheng/article/details/78580820
Vue表单校验官方文档:https://cn.vuejs.org/v2/cookbook/form-validation.html
vuelidate官网【前后分离模式】https://vuelidate.netlify.com/#getting-started
注意事项:
A、这里的:class传值就是为了改变class是否会增加"error"选择器来改变错误提示是否显示-
B、vuelidate插件提供的校验事件方法:$touch()
@blur="$v.username$touch()"表示blur事件触发(失去焦点)时验证。
@input="$v.username.$touch()"表示input事件触发(输入内容发生变化)时验证。
本人总结的案例【结果官方文档一看就懂】
<template>
<div class="login" :style='{height:$screen_height}'>
<div class="form">
<div class="title">用户注册</div>
<div class="form-group">
<!--这里的:class传值就是为了改变class是否会增加"error"选择器来改变错误提示是否显示-->
<div class="message" :class="{error:$v.username.$error}">
<p v-if="!$v.username.required">用户名不能为空</p>
<p v-if="!$v.username.alphaNum">用户名必须是字母或数字</p>
<p v-if="!$v.username.minLength">用户名不能低于{{$v.username.$params.minLength.min}}位</p>
<p v-if="!$v.username.maxLength">用户名不能高于{{$v.username.$params.maxLength.max}}位</p>
</div>
<!--@input事件或@blur事件由插件vuelidate官方提供了$touch()方法执行校验-->
<label><input type="text" placeholder="请输入用户名" v-model.trim="username"
@input="$v.username.$touch()"></label>
</div>
<div class="form-group">
<div class="message" :class="{error:$v.email.$error}">
<p v-if="!$v.email.required">邮箱不能为空</p>
<p v-if="!$v.email.email">邮箱格式不正确</p>
</div>
<label><input type="email" placeholder="请输入邮箱" v-model.trim="email" @input="$v.email.$touch()"></label>
</div>
<div class="form-group">
<div class="message" :class="{error:$v.password.$error}">
<p v-if="!$v.password.required">密码不能为空</p>
<p v-if="!$v.password.alphaNum">密码必须是字母或数字</p>
<p v-if="!$v.password.minLength">密码不能低于{{$v.password.$params.minLength.min}}位</p>
<p v-if="!$v.password.maxLength">密码不能高于{{$v.password.$params.maxLength.max}}位</p>
</div>
<label><input type="password" placeholder="请输入密码" v-model.trim="password"
@input="$v.password.$touch()"></label>
</div>
<div class="form-group">
<div class="message" :class="{error:$v.password_again.$error}">
<p v-if="!$v.password_again.sameAsPassword">密码输入不一致</p>
</div>
<label><input type="password" placeholder="请重新输入密码" v-model="password_again"
@input="$v.password_again.$touch()"></label>
</div>
<div class="form-group">
<div class="warning">注:如果没有助记词,请点击创建新钱包</div>
<div class="message" :class="{ 'error': $v.mnemonic.$error }">
<p v-if="!$v.mnemonic.required">助记词不能为空</p>
<p v-if="!$v.mnemonic.minLength">助记词不能低于{{$v.mnemonic.$params.minLength.min}}位</p>
</div>
<label for="mnemonic">
<textarea name="mnemonic" id="mnemonic" v-model.trim="mnemonic" rows="4"
placeholder="请输入钱包助记词" @input="$v.mnemonic.$touch()"></textarea>
</label>
</div>
<div class="new-wallet">
<div class="safe_info">重要提示:生成新的助记词务必保存好,如丢失平台一概不负责!!!</div>
<a href="JavaScript:void(0)">创建新钱包</a>
</div>
<button @click="submit" :disabled="reg_bool">免费注册</button>
</div>
</div>
</template>
<script>
import { required, minLength, maxLength, sameAs, alphaNum, email } from 'vuelidate/lib/validators';
export default {
name: 'login',
data () {
return {
username: '',
email: '',
password: '',
password_again: '',
mnemonic: '',
reg_bool: true,
};
},
validations: {
username: {
required,
alphaNum,
minLength: minLength( 4 ),
maxLength: maxLength( 15 ),
},
email: {
required,
email,
},
password: {
required,
alphaNum,
minLength: minLength( 6 ),
maxLength: maxLength( 15 ),
},
password_again: {
sameAsPassword: sameAs( 'password' ),
},
mnemonic: {
required,
minLength: minLength( 24 ),
},
},
methods: {
checkForm () {
window.setInterval( () => {
// 确保每一个输入框都没有错误
let error = this.$v.username.$error ||
this.$v.email.$error ||
this.$v.password.$error ||
this.$v.password_again.$error ||
this.$v.mnemonic.$error;
// 确保没有input标签还没@input事件就提交空值问题
let not_empty = this.username &&
this.username &&
this.email &&
this.password &&
this.password_again &&
this.mnemonic;
// 全部输入了,且没错误,才能激活注册按钮!
not_empty && !error ? this.reg_bool = false : this.reg_bool = true;
}, 1000 );
},
submit () {
console.log( this.$v.username.$error );
},
},
mounted () {
this.$nextTick( () => {
this.checkForm();
} );
},
};
</script>
<style lang="scss" scoped="scoped">
.login {
background: url("../assets/img/bg/login.jpg");
display: flex;
flex-direction: column;
justify-content: center;
text-align: center;
.form {
.title {
height: 40px;
font-size: 30px;
}
.message {
display: none;
text-align: left;
p {
font-size: 12px;
color: #f40;
}
margin: 1px;
}
.error {
display: block;
}
input, button, textarea {
display: block;
width: 98%;
font-size: 18px;
margin: 0 auto;
margin-bottom: 20px;
outline: none;
border: 0;
resize: none;
}
input, button {
height: 50px;
}
button {
background: #1d953f;
font-size: 24px;
margin-top: 20px;
}
div.warning {
font-size: 18px;
color: #ffe600;
margin-bottom: 20px;
}
div.new-wallet {
a {
font-size: 20px;
color: #00f;
}
.safe_info {
color: #f00;
margin-bottom: 10px;
}
}
}
}
</style>