Vue简单日历

使用Vue实现简单的日历。

原理分析：
1.获取当前时间
2.显示当前时间
3.点击增加和减少月份
4.大月和小月的天数

效果演示

初始样式（显示现在的日期时间）
在这里插入图片描述
增加一个月

在程序开始之前一定注意：
引入Vue.js架包

代码演示

Body内容

<script type="text/x-template" id="calendar"><!-- 年份--><div id="year"><!--月份 --><div class="month"><ul><li class="arrow" @click="pickPre(currentYear,currentMonth)">❮</li><li class="year-month" @click="pickYear(currentYear,currentMonth)"><span class="choosen-year" style="color:blue">{{ currentYear }}</span><span class="choosen-month" style="color:blue">{{ currentMonth }}月</span></li><li class="arrow" @click="pickNext(currentYear,currentMonth)">❯</li></ul></div><!-- 星期 --><ul class="weekdays"><li>一</li><li>二</li><li>三</li><li>四</li><li>五</li><li style="color:red">六</li><li style="color:red">日</li></ul><!-- 日期 --><ul class="days"><!-- 循环--><li v-for="dayobject in days"><!--本月--><span v-if="dayobject.day.getMonth()+1 != currentMonth" class="other-month">{{ dayobject.day.getDate() }}</span><!--判断天数是否正确--><span v-else><!--今天--><span v-if="dayobject.day.getFullYear() == new Date().getFullYear() && dayobject.day.getMonth() == new Date().getMonth() && dayobject.day.getDate() == new Date().getDate()"class="active">{{ dayobject.day.getDate() }}</span><span v-else>{{ dayobject.day.getDate() }}</span></span></li></ul></div></script><div id="app"><calendar></calendar></div>

CSS样式

* {margin: 0;padding: 0;}/*日历*/#calendar {width: 98%;border: 2px solid #A4A7B0;height: 335px;margin-left: 0.5%;}.month {width: 92%;height: 48px;border: 2px solid #FFFFFF;margin-left: 3%;margin-top: 20px;}.month ul {margin: 0;padding: 0;display: flex;margin-top: 11px;justify-content: space-between;}.year-month {flex-direction: column;align-items: center;justify-content: space-around;}.choosen-year {padding: 0 20px;font-size: 16px;font-weight: 200;}.choosen-month {text-align: center;font-size: 16px;font-weight: 200;}.arrow {width: 3%;height: 25px;}.arrow1 {background: url(left.png) no-repeat 0 0 /100% 100%;margin-left: 44px;}.arrow2 {background: url(right.png) no-repeat 0 0 /100% 100%;margin-right: 44px;}.month ul li {color: #999;font-size: 20px;text-transform: uppercase;letter-spacing: 3px;list-style: none;}.weekdays {margin: 0;color: #FFFFFF;background: #A4A7B0;width: 96.6%;margin-top: 26px;height: 34px;line-height: 34px;margin-left: 2.2%;}.weekdays li {display: inline-block;text-align: center;color: #11616f;font-size: 14px;font-weight: 100;width: 12.7%;}.days {padding: 0;margin: 0;display: flex;flex-wrap: wrap;justify-content: space-around;}.days li {list-style-type: none;display: inline-block;width: 14.2%;text-align: center;padding-bottom: 3px;padding-top: 7px;font-size: 12.78px;color: rgb(14, 220, 235);font-weight: 200;}.days li span span {height: 29.5px;width: 27px;line-height: 29.5px;display: inline-block;}.days li .class-30 {background: url(bg_30.png) no-repeat 0 0 /100% 100%;}.days li .class-60 {background: url(bg_60.png) no-repeat 0 0 /100% 100%;}.days li .class-3060 {background: url(bg_3060.png) no-repeat 0 0 /100% 100%;}.days li .other-month {padding: 5px;color: #84a8ae;}

Vue.js内容

Vue.component("calendar", {template: "#calendar",data: function() {return {currentDay: 1,currentMonth: 1,currentYear: 1970,currentWeek: 1,days: [],}},created() {let that = this;that.initData(null);},methods: {initData: function(cur) {let that = this;let leftcount = 0;let date;if (cur) {date = new Date(cur);} else {let now = new Date();let d = new Date(that.formatDate(now.getFullYear(), now.getMonth(), 1));d.setDate(35);date = new Date(that.formatDate(d.getFullYear(), d.getMonth() + 1, 1));}that.currentDay = date.getDate();that.currentYear = date.getFullYear();that.currentMonth = date.getMonth() + 1;that.currentWeek = date.getDay(); // 1...6,0if (that.currentWeek == 0) {that.currentWeek = 7;}let str = that.formatDate(that.currentYear, that.currentMonth, that.currentDay);that.days.length = 0;//初始化for (let i = that.currentWeek - 1; i >= 0; i--) {let d = new Date(str);d.setDate(d.getDate() - i);let dayobject = {}; dayobject.day = d;that.days.push(dayobject); }for (let i = 1; i <= 35 - that.currentWeek; i++) {let d = new Date(str);d.setDate(d.getDate() + i);let dayobject = {};dayobject.day = d;that.days.push(dayobject);}},pickPre: function(year, month) {let that = this;let d = new Date(that.formatDate(year, month, 1));d.setDate(0);that.initData(that.formatDate(d.getFullYear(), d.getMonth() + 1, 1));},pickNext: function(year, month) {let that = this;let d = new Date(that.formatDate(year, month, 1));d.setDate(35);that.initData(that.formatDate(d.getFullYear(), d.getMonth() + 1, 1));},pickYear: function(year, month) {alert(year + "," + month);},// 返回 类似 2016-01-02 格式的字符串formatDate: function(year, month, day) {let y = year;let m = month;if (m < 10) m = "0" + m;let d = day;if (d < 10) d = "0" + d;return y + "-" + m + "-" + d},}})let vm = new Vue({el: '#app',})