Vue3 实现验证码倒计时功能(刷新保持状态)
作者:故蓝寻
倒计时的运用场景是需要经常用到的,但是根据业务的不同,好比手机验证码或者是邮箱验证码之类的,即使用户跳转到其它页面或者刷新,再次回到登录也,验证码的倒计时也得保持状态,下面通过本文给大家分享Vue3 验证码倒计时功能实现,感兴趣的朋友一起看看吧
前言
倒计时的运用场景是需要经常用到的,但是根据业务的不同,好比手机验证码或者是邮箱验证码之类的,即使用户跳转到其它页面或者刷新,再次回到登录也,验证码的倒计时也得保持状态,大家参考逻辑即可,每个人的项目不同,这里提供大概的实现代码。
代码实现
主要逻辑
const state = reactive({ labelPosition: 'top', formData: { phone: '', code: '', }, // 倒计时 countDownTime: 60, timer: null, countDownIng: false, }) const countDown = () => { let startTime = localStorage.getItem('startTimeLogin'); let nowTime = new Date().getTime(); if (startTime) { let surplus = 60 - parseInt((nowTime - startTime) / 1000, 10); state.countDownTime = surplus <= 0 ? 0 : surplus; } else { state.countDownTime = 60; localStorage.setItem('startTimeLogin', nowTime); } state.timer = setInterval(() => { state.countDownTime--; state.getCodeDisabled = true; state.countDownIng = true; if (state.countDownTime <= 0) { localStorage.removeItem('startTimeLogin'); clearInterval(state.timer); state.countDownTime = 60; state.countDownIng = false; } }, 1000) }
onMounted 方法
onMounted(() => { let sendEndTime = localStorage.getItem('startTimeLogin'); if (sendEndTime) { state.countDownIng = true; countDown() } })
完整代码
<template> <main class="content"> <div class="mi-card login-card"> <div class="reg-form"> <el-form :label-position="labelPosition" label-width="auto" :model="formData"> <el-form-item label="手机号"> <el-input v-model="formData.phone" placeholder="手机号"> <template #append> <div class="get-code"> <span v-if="!countDownIng" @click="countDown">获取验证码</span> <span v-if="countDownIng">倒计时{{ countDownTime }}s</span> </div> </template> </el-input> </el-form-item> <el-form-item label="验证码"> <el-input v-model="formData.code" placeholder="验证码"/> </el-form-item> <el-form-item> <span class="sub-btn to-login" style="width: 100%">注册</span> </el-form-item> </el-form> </main> </template> <script> import {defineComponent, reactive, toRefs, onMounted} from 'vue' export default defineComponent({ name: "LoginPage", setup() { const state = reactive({ labelPosition: 'top', formData: { phone: '', code: '', }, // 倒计时 countDownTime: 60, timer: null, countDownIng: false, }) /** * 作者:故蓝寻 * 时间:2022/08/05 17:13:37 * 功能:获取验证码 事件 */ const countDown = () => { let startTime = localStorage.getItem('startTimeLogin'); let nowTime = new Date().getTime(); if (startTime) { let surplus = 60 - parseInt((nowTime - startTime) / 1000, 10); state.countDownTime = surplus <= 0 ? 0 : surplus; } else { state.countDownTime = 60; localStorage.setItem('startTimeLogin', nowTime); } state.timer = setInterval(() => { state.countDownTime--; state.getCodeDisabled = true; state.countDownIng = true; if (state.countDownTime <= 0) { localStorage.removeItem('startTimeLogin'); clearInterval(state.timer); state.countDownTime = 60; state.countDownIng = false; } }, 1000) } onMounted(() => { let sendEndTime = localStorage.getItem('startTimeLogin'); if (sendEndTime) { state.countDownIng = true; countDown() } }) return { ...toRefs(state), countDown } } }) </script> <style scoped lang="scss"> </style>
小结
- 大致逻辑是这样,大家根据具体的需要来完善,vue2也适用
- 这是vue3,但是使用的js语法,使用的是ts语法的,也是一样的逻辑
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