javascript

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function ArrayTool(){}var ArrayTool = new ArrayTool();function getMax(arr){var max = arr[0];for(var i=0;i<arr.length;i++){if(max<arr[i])max = arr[i];}return max;}ArrayTool.getMax = getMax;

arraytool.js

<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"><html><head><meta http-equiv="Content-Type" content="text/html; charset=UTF-8"><script type="text/javascript" src="arraytool.js"></script><script type="text/javascript"> var arr = [5,1,4,8,9,3];//要注意定义数组用的是中括号var a = ArrayTool.getMax(arr); alert("max=" + a);  function startTime(){var today = new Date();var h = today.getHours();var m = today.getMinutes();var s = today.getSeconds();m = checkTime(m);s = checkTime(s);document.getElementById("time").innerHTML=h+":"+m+":"+s;setTimeout('startTime()',500);}function checkTime(i){if(i<10){i = "0"+i;}return i;} </script><style type="text/css">.a{background-color: #FF0000;}.z{background-color: #000099;}.z b{background-color: #66FF00;}a:link,a:visited{color: #33FF00;text-decoration: none;}</style><title>网页测试</title></head><body onload="startTime()"><div id="time" class="a"></div><a href="#" onclick="alert('haha')">没有点击效果的链接</a><div class="z">fhgf<b>hgj</b>jgffdshh</div><p>DSGFD<b>你好</b>HFhgfhgj</p></body></html>

扩展类的功能

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