专栏目标
在vue和element UI联合技术栈的操控下，本专栏提供行之有效的源代码示例和信息点介绍，做到灵活运用。
（1）提供vue2的一些基本操作：安装、引用，模板使用，computed，watch，生命周期(beforeCreate，created,beforeMount，mounted, beforeUpdate，updated, beforeDestroy，destroyed，activated，deactivated，errorCaptured，components，)、 $root , $parent , $children , $slots , $refs , props, $emit , eventbus ,provide / inject, Vue.observable, $listeners, $attrs, $nextTick , v-for, v-if, v-else,v-else-if，v-on，v-pre，v-cloak，v-once，v-model， v-html, v-text, keep-alive，slot-scope， filters, v-bind，.stop, .native, directives，mixin，render，国际化，Vue Router等
（2）提供element UI的经典操作：安装，引用，国际化，el-row，el-col，el-button，el-link，el-radio，el-checkbox ，el-input，el-select, el-cascader, el-input-number, el-switch,el-slider, el-time-picker, el-date-picker, el-upload, el-rate, el-color-picker, el-transfer, el-form, el-table, el-tree, el-pagination,el-badge,el-avatar,el-skeleton, el-empty, el-descriptions, el-result, el-statistic, el-alert, v-loading, $message, $alert, $prompt, $confirm , $notify, el-breadcrumb, el-page-header,el-tabs ,el-dropdown,el-steps,el-dialog, el-tooltip, el-popover, el-popconfirm, el-card, el-carousel, el-collapse, el-timeline, el-divider, el-calendar, el-image, el-backtop，v-infinite-scroll， el-drawer等
本文章目录
需求背景
在vue项目开发中，经常用到某些提示。勾选后，要求今天不再弹窗提示。这个示例是一个演示，通过设置和获取localStorage中某个值来判断是否提示。
示例效果
示例源代码（共90行）
/*
* @Author: 大剑师兰特（xiaozhuanlan），还是大剑师兰特（CSDN）
* @此源代码版权归大剑师兰特所有，可供学习或商业项目中借鉴，未经授权，不得重复地发表到博客、论坛，问答，git等公共空间或网站中。
* @Email: [email protected]
* @weixin: gis-dajianshi
* @First published in CSDN
* @First published time: 2022-09-08
*/
<template>
<div class="container">
<div class="top">
<h3>vue项目，勾选后今天不再弹窗提示 </h3>
<div class="author">大剑师兰特, 还是大剑师兰特，gis-dajianshi</div>
</div>
<h4>
<el-button type="primary" @click="showInfo()"> 点击判断提示 </el-button>
</h4>
<div class="tipBox" v-if="isbox">
<h3>提示弹窗</h3>
<el-checkbox v-model="noTip" @change='noTipAgain()'>不再提示</el-checkbox>
<div class="close" @click="isbox=false">
<el-button type="primary" size="mini"> 关闭 </el-button>
</div>
</div>
</div>
</template>
<script>
import dayjs from "dayjs";
export default {
data() {
return {
isbox: false,
noTip: false,
}
},
methods: {
showInfo() {
let noTipTime = localStorage.getItem('noTipTime')
let curtime = dayjs().unix() * 1000
if (noTipTime) {
if (noTipTime > curtime) {
this.$message({
type: "error",
message: '今天已经不再提示了！'
})
} else {
this.isbox = true;
this.noTip = false
}
} else {
this.isbox = true;
}
},
noTipAgain() {
if (this.noTip) {
let curdate = dayjs(new Date()).format('YYYY-MM-DD');
let curdayTime = dayjs(curdate).unix() * 1000 + 24 * 60 * 60 * 1000
localStorage.setItem('noTipTime', curdayTime)
}
},
},
}
</script>
<style scoped>
.container {
width: 1000px;
height: 580px;
margin: 50px auto;
border: 1px solid green;
position: relative;
}
.top {
margin: 0 auto 30px;
padding: 10px 0;
background: orange;
color: #fff;
}
.tipBox {
position: absolute;
left: calc(50% - 150px);
top: calc(50%);
width: 300px;
height: 200px;
border: 1px solid blue;
background: #f4f4f4;
}
.close {
margin-top: 60px;
}
</style>
核心代码
showInfo() {
let noTipTime = localStorage.getItem('noTipTime')
let curtime = dayjs().unix() * 1000
if (noTipTime) {
if (noTipTime > curtime) {
this.$message({
type: "error",
message: '今天已经不再提示了！'
})
} else {
this.isbox = true;
this.noTip = false
}
} else {
this.isbox = true;
}
},
noTipAgain() {
if (this.noTip) {
let curdate = dayjs(new Date()).format('YYYY-MM-DD');
let curdayTime = dayjs(curdate).unix() * 1000 + 24 * 60 * 60 * 1000
localStorage.setItem('noTipTime', curdayTime)
}
},