📄 2-40.html

📁 文件是《精通Javascript+jQuery》的书中实例

💻 HTML

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<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html>
<head>
<title>检测浏览器和操作系统</title>
<script language="javascript">
var sUserAgent = navigator.userAgent;
//检测Opera、KHTML
var isOpera = sUserAgent.indexOf("Opera") > -1;
var isKHTML = sUserAgent.indexOf("KHTML") > -1 || sUserAgent.indexOf("Konqueror") > -1 || sUserAgent.indexOf("AppleWebKit") > -1;
//检测IE、Mozilla
var isIE = sUserAgent.indexOf("compatible") > -1 && sUserAgent.indexOf("MSIE") > -1 && !isOpera;
var isMoz = sUserAgent.indexOf("Gecko") > -1 && !isKHTML;
//检测操作系统
var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh");
var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
if(isOpera) document.write("Opera ");
if(isKHTML) document.write("KHTML ");
if(isIE) document.write("IE ");
if(isMoz) document.write("Mozilla ");
if(isWin) document.write("Windows");
if(isMac) document.write("Mac");
if(isUnix) document.write("Unix");
</script>
</head>

<body>
</body>
</html>

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