npm install vuelidate --save
在要使用的元件import,並掛載
import Vue from 'vue'
import Vuelidate from 'vuelidate'
Vue.use(Vuelidate)
需創建一個 validations 選項,裡面帶入要判斷的function,透過v-if判斷要顯示的提示
<!-- 要使用v-model綁定 data值 -->
<template>
<div>
<input v-model="account">
<span style="color:red" v-if="!$v.account.required">請輸入帳號</span>
</div>
</template>
// vue元件中
// required 判斷欄位是否有輸入
import { required } from "vuelidate/lib/validators";
export default {
data() {
return {
account: '',
}
},
validations: {
account: {
required,
}
}
}
可以創建一個 utils/rules.js 檔案,來存放需判斷的function
// utils/rules.js
// 判斷手機號碼正規
export const phoneNo = (value) => {
return /^09[0-9]{8}$/.test(value);
};
<!-- vue元件中 -->
<template>
<div>
<inpute v-model="phone">
<span v-if="$v.phone.phoneNo" style="color:red">請輸入正確手機格式</span>
</div>
</template>
// vue元件中
import Vue from "vue";
import Vuelidate from "vuelidate";
import { required } from "vuelidate/lib/validators";
import { phoneNo } from "@/utils/rules";
Vue.use(Vuelidate);
export default {
data() {
return {
phone: ""
};
},
mounted() {},
validations: {
phone: {
phoneNo
}
}
};