<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <meta http-equiv="Content-Type" content="text/html; charset=utf-8" /> <title>无标题文档</title> <style type="text/css"> p { color:#09F; } </style> </head> <body onload="time()"> <p>此刻时间：</p> <div id="time"></div> <script> function time() { var d=new Date(); var h=d.getHours(); var m=d.getMinutes(); var s=d.getSeconds(); m=checkTime(m); s=checkTime(s); document.getElementById(‘time‘).innerHTML=h+":"+m+":"+s; var t=setTimeout(‘time()‘,500); function checkTime(i) { if(i<10) {i="0"+i;} return i;} } </script> <p>现在的时间是：</p> <script> document.write(Date()); </script> <p>从1970/01/01过去的毫秒：</p> <script> var d=new Date(); document.write(d.getTime()); </script> <p>设定年份：</p> <script> var d=new Date(); d.setFullYear(2014,2,22);//注意：表示月份的参数介于 0 到 11 之间。也就是说，如果希望把月设置为 8 月，则参数应该是 7。 document.write(d); </script> <p>日期转换为UTC字符串</p> <script> var d=new Date(); var s=d.toUTCString(); document.write(s); </script> <p>getDay()</p> <script> var d=new Date(); document.write(d.getDay()); </script> <p>今天是星期？</p> <script> var array=new Array("星期日7","星期一","星期二","星期三","星期四","星期五","星期六"); var d=new Date(); document.write(array[d.getDay()]); </script> <p>将日期设置为500天之后</p> <script> var myDate=new Date(); document.write("现在："+myDate+‘<br>‘); myDate.setDate(myDate.getDate()+500); document.write("500五天后："+myDate); </script> <p>日期比较：</p> <script> var d=new Date(); d.setFullYear(2008,7,8); var today=new Date(); if(today>d) {document.write("2008北京奥运会已开幕");} else {document.write("2008北京奥运会待开幕");} </script> </body> </html>
原文：http://www.cnblogs.com/super-zhen/p/3529687.html