javascript时实时间现实

来源：互联网发布：win10写字板源码编辑：程序博客网时间：2024/06/07 00:43
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML Transitional//EN" "http://www.w3.org/TR/xhtml/DTD/xhtml1-transitional.dtd"><html xmlns="http://www.w3.org/1999/xhtml"><head><title>其他</title><script type="text/javascript">//String对象var str ="abc";var str1 = new String("string");//alert(str.length);//length属性报告了字符串的长度//alert(str1.length);//str.indexOf();//indexOf第一个参数,要查找的字符串.返回要查找的字符串在被查找字符串中的索引//字符串的索引是从0开始的//alert(str.indexOf("bc"));//str.substring();//用来截取字符串,两个参数，开始位置和结束位置//alert(str1.substring(2,3));window.onload = initAll;var interval;function initAll() {setInterval(setClock,1000);interval = setInterval(zoomInDiv,50);//zoomInDiv();};function zoomInDiv() {var oDiv = document.getElementById("oDiv");var w = oDiv.style.width;var h = oDiv.style.height;if (!w && !h) {w=200;h=200;} else {w = parseInt(w);h = parseInt(h);w=w+2;h=h+2;}oDiv.style.width= w+"px";oDiv.style.height = h+"px";if (w>=1000 && h >=1000) {clearInterval(interval);}}function setClock() {var h= document.getElementById("hspan");var m= document.getElementById("mspan");var s= document.getElementById("sspan");var d = new Date();h.innerHTML = d.getHours();m.innerHTML = d.getMinutes();s.innerHTML = d.getSeconds();}</script><style type="text/css">#oDiv {width:200px;height:200px;background:blue;}</style></head><body>现在时间:<span id="hspan">1</span>时<span id="mspan">1</span>分<span id="sspan">1</span>秒 </body></html>
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