时间和日期在电脑与网络中的显示是多种多样的，电脑开机有时间显示，有些网页中也显示出打开该网页的时间以及显示当前的时间。其实，这做起来很简单，用JavaScript脚本语言就可以很方便地编制出这样的效果来。 网页制作中，时间和日期的各种格式的特效代码如下:
以下是引用片段：
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN">
<HTML>
<HEAD>
<meta http-equiv="Content-Type" content="text/html; charset=gb2312">
<TITLE>emu's date simple date formatter</TITLE>
<META NAME="Generator" CONTENT="EditPlus">
<META NAME="Author" CONTENT="emu">
<META NAME="Keywords" CONTENT="date formatter format emu">
<META NAME="Description" CONTENT="A function to format Date object into String">
</HEAD>
<BODY>
<SCRIPT LANGUAGE="JavaScript">
<!--
Date.prototype.format = function (format){
if (format == null) format = "yyyy/MM/dd HH:mm:ss.SSS";
var year = this.getFullYear();
var month = this.getMonth();
var sMonth = ["January","February","March","April","May","June","July","August","September","October","November","December"][month];
var date = this.getDate();
var day = this.getDay();
var hr = this.getHours();
var min = this.getMinutes();
var sec = this.getSeconds();
var daysInYear = Math.ceil((this-new Date(year,0,0))/86400000);
var weekInYear = Math.ceil((daysInYear+new Date(year,0,1).getDay())/7);
var weekInMonth = Math.ceil((date+new Date(year,month,1).getDay())/7);
return format.replace("yyyy",year).replace("yy",year.toString().substr(2)).replace("dd",(date<10?"0":"")+date).replace("HH",(hr<10?"0":"")+hr).replace("KK",(hr%12<10?"0":"")+hr%12).replace("kk",(hr>0&&hr<10?"0":"")+(((hr+23)%24)+1)).replace("hh",(hr>0&&hr<10||hr>12&&hr<22?"0":"")+(((hr+11)%12)+1)).replace("mm",(min<10?"0":"")+min).replace("ss",(sec<10?"0":"")+sec).replace("SSS",this%1000).replace("a",(hr<12?"AM":"PM")).replace("W",weekInMonth).replace("F",Math.ceil(date/7)).replace(/E/g,["Sunday","Monday","Tuesday","Wednesday","Thursday","Friday","Saturday"][day]).replace("D",daysInYear).replace("w",weekInYear).replace(/MMMM+/,sMonth).replace("MMM",sMonth.substring(0,3)).replace("MM",(month<9?"0":"")+(month+1));
}
var d = new Date();
alert(d.format());//default format
alert(d.format("MM-dd-yyyy"));
alert(d.format("dd/MM/yy"));
alert(d.format("dd\MM\yyyy HH:mm ss.SSS"));
alert(d.format("yyyy年MM月dd日 HH时mm分ss.SSS秒"));
alert(d.format("yyyy年MM月dd日 E HH(0~23)时mm分ss.SSS秒"));
alert(d.format("yyyy年MM月dd日 E KK(0~11)时mm分ss.SSS秒 a"));
alert(d.format("yyyy年MM月dd日 E hh(1~12)时mm分ss.SSS秒 a"));
alert(d.format("yyyy年MM月dd日 E kk(1~24)时mm分ss.SSS秒 今年的第D天,第w周,MMMM这个月的第W周,MMM这个月的第F个E"));
//-->
</SCRIPT>
</BODY>
</HTML>
以下是纯中文显示的时间与日期：
以下是引用片段：
<SCRIPT LANGUAGE="JavaScript">
<!--
String.prototype.toCHS=function(){return this.replace(/d/g, function(a){return "零一二三四五六七八九".charAt(parseInt(a))});}
Number.prototype.toCHS=function(){return((this>19?Math.floor(this/10):"")+(this>9?("十"):"")+(this%10==0&&this>0?"":this%10)).toCHS();}
Date.prototype.toCHS=function(){
with(this)return(getFullYear()+"").toCHS()+"年"+(getMonth()+1).toCHS()+"月"+getDate().toCHS()+"日"+getHours().toCHS()+"时"+getMinutes().toCHS()+"分"+getSeconds().toCHS()+"秒";
}
alert(new Date().toCHS());
//-->
</SCRIPT>