javascript时实时间实际

javascript时实时间现实
<!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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