在学习javascript过程中，菜鸟教程有一个javascript实例---css日历，感觉挺有趣的，在它的基础上增加了一些简单的功能（差点哭辽）。
功能
按照传统日历方式显示该月的每一天。
可以突出显示今天的日期
可以翻阅上一个月和下一个月的日历
实现
step1 传统日历布局样式：分别将年份与月份、星期、该月的全部天数采用列表布局，排列组成传统日历的样式。
step2 初始化和更新月份：先将列表清空（debug过程中，有一个发现，初始化的列表便存在的一个childNodes，该项目中需要清空），然后再填入前导空白（为了和星期能够对应），再填入具体某一个月的天数。
step3 通过document获取列表对象，改变今天对应行的样式（className变化）来突出显示。
其他细节在代码中实现
代码
html代码
<!DOCTYPE html> <html> <head> <meta charset="UTF-8"> <title>CSS日历</title> <link type="text/css" href="https://www.jb51.net/style.css" > </head> <body> <h1>CSS日历</h1> <div> <ul> <li>❮</li> <li>❯</li> <li><span>August</span><br> <span>2016</span></li> </ul> </div> <ul> </ul> <ul> </ul> </body> <script type="text/javascript" src="https://www.jb51.net/show.js"></script> </html>
CSS代码
@charset "UTF-8"; * {box-sizing:border-box;} ul {list-style-type: none;} body {font-family: Verdana,sans-serif;} .center { text-align: center; border: 3px solid green; } .month { padding: 70px 25px; width: 100%; background: #1abc9c; } .month ul { margin: 0; padding: 0; } .month ul li { color: white; font-size: 20px; text-transform: uppercase; letter-spacing: 3px; } .month .prev { float: left; padding-top: 10px; } .month .next { float: right; padding-top: 10px; } .weekdays { margin: 0; padding: 10px 0; background-color: #ddd; } .weekdays li { display: inline-block; width: 13.6%; color: #666; text-align: center; } .days { padding: 10px 0; background: #eee; margin: 0; } .days li { list-style-type: none; display: inline-block; width: 13.6%; text-align: center; margin-bottom: 5px; font-size:12px; color: #777; } .days li active { padding: 5px; background: #1abc9c; color: white !important; } /* Add media queries for smaller screens */ @media screen and (max-width:720px) { .weekdays li, .days li {width: 13.1%;} } @media screen and (max-width: 420px) { .weekdays li, .days li {width: 12.5%;} .days li .active {padding: 2px;} } @media screen and (max-width: 290px) { .weekdays li, .days li {width: 12.2%;} }
javascript代码
var date = new Date(); var year = date.getFullYear(); var month=date.getMonth(); var day = date.getDate(); var week=date.getDay(); var p=(week-day+1+35)%7+day-1; var monthName=[ "January","February","March","April","May","June","July","August","September","October","November","December" ]; var monthNum=[ 31,28,31,30,31,30,31,31,30,31,30,31 ]; var weekName=[ "Su","Mo","Tu","We","Th","Fr","Sa" ]; var aimmonth=month,aimyear=year; function init(){ createTitle(year,month); var weekdays=document.getElementById("weekdays"); for(var i=0;i<7;i++){ var x = document.createElement("LI"); var t = document.createTextNode(weekName[i]); x.appendChild(t); weekdays.appendChild(x); } delDay(); createDay(); isnow(); } function change(x){ aimmonth+=x; if(aimmonth==-1){ aimyear-=1; aimmonth=11; }else if(aimmonth==12){ aimyear+=1; aimmonth=0; } createTitle(aimyear,aimmonth); delDay(); createDay(); isnow(); } function createTitle(y,m){ document.getElementById("year").innerHTML=y; document.getElementById("month").innerHTML=monthName[m]; } function createDay(){ var datetmp=new Date(); datetmp.setFullYear(aimyear,aimmonth,1); var firstday=datetmp.getDay(); var days=document.getElementById("days"); for(var i=0;i<firstday;i++){ var x = document.createElement("LI"); var t = document.createTextNode(""); x.appendChild(t); days.appendChild(x); } for(var i=1;i<=getMonthDay();i++){ var x = document.createElement("LI"); var t = document.createTextNode(i); x.appendChild(t); days.appendChild(x); } } function delDay(){ var list=document.getElementById("days"); var len=list.childNodes.length; for(var i=0;i<len;i++){ list.removeChild(list.childNodes[0]); } } function isnow(){ if(aimyear==year&&aimmonth==month){ days.childNodes[p].style="padding: 5px;background: #1abc9c;color: white !important;" } } function getMonthDay(){ if(aimmonth!=2){ return monthNum[aimmonth]; }else{ if(aimyear%4!=0||aimyear%100==0&&aimyear%400!=0){ return monthNum[aimmonth]; } else return 29; } } //main init();
总结