function detectOS() {
var sUserAgent = navigator.userAgent;
var isWin = (navigator.platform == "Win32") || (navigator.platform == "Windows");
var isMac = (navigator.platform == "Mac68K") || (navigator.platform == "MacPPC") || (navigator.platform == "Macintosh") || (navigator.platform == "MacIntel");
if (isMac) return "Mac";
var isUnix = (navigator.platform == "X11") && !isWin && !isMac;
if (isUnix) return "Unix";
var isLinux = (String(navigator.platform).indexOf("Linux") > -1);
if (isLinux) return "Linux";
if (isWin) {
var isWin2K = sUserAgent.indexOf("Windows NT 5.0") > -1 || sUserAgent.indexOf("Windows 2000") > -1;
if (isWin2K) return "Win2000";
var isWinXP = sUserAgent.indexOf("Windows NT 5.1") > -1 || sUserAgent.indexOf("Windows XP") > -1;
if (isWinXP) return "WinXP";
var isWin2003 = sUserAgent.indexOf("Windows NT 5.2") > -1 || sUserAgent.indexOf("Windows 2003") > -1;
if (isWin2003) return "Win2003";
var isWinVista= sUserAgent.indexOf("Windows NT 6.0") > -1 || sUserAgent.indexOf("Windows Vista") > -1;
if (isWinVista) return "WinVista";
var isWin7 = sUserAgent.indexOf("Windows NT 6.1") > -1 || sUserAgent.indexOf("Windows 7") > -1;
if (isWin7) return "Win7";
}
return "other";
}
document.writeln("您的操作系统是：" + detectOS());
浏览器版信息是可以通过javascript得到的
浏览器代码名称:navigator.appCodeName
浏览器名称:navigator.appName
浏览器版本号:navigator.appVersion
是否支持Java:navigator.javaEnabled()
MIME类型数:navigator.mimeTypes.length
操作系统平台:navigator.platform
插件数:navigator.plugins.length
用户代理:navigator.userAgent
EX：
<html>
<head>
<title>JS完整获取IE浏览器信息</title>
</head>
<body leftmargin="0" topmargin="0" marginwidth="0" marginheight="0">
<table width="435" border="1" cellspacing="3" cellpadding="0">
<tr>
<td>浏览器类型</td>
<td>
<script>document.write(navigator.appName)</script>
</td>
</tr>
<tr>
<td >浏览器版本</td>
<td >
<script>document.write(navigator.appVersion)</script>
</td>
</tr>
<tr>
<td>浏览器语言</td>
<td>
<script>document.write(navigator.browserLanguage)</script>
</td>
</tr>
<tr>
<td >CPU类型</td>
<td >
<script>document.write(navigator.cpuClass)</script>
</td>
</tr>
<tr>
<td>操作系统</td>
<td>
<script>document.write(navigator.platform)</script>
</td>
</tr>
<tr>
<td >系统语言</td>
<td >
<script>document.write(navigator.systemLanguage)</script>
</td>
</tr>
<tr>
<td>用户语言;</td>
<td>
<script>document.write(navigator.userLanguage)</script>
</td>
</tr>
<tr>
<td >在线情况</td>
<td >
<script>document.write(navigator.onLine)</script>
</td>
</tr>
<tr>
<td>屏幕分辨率</td>
<td> <script>document.write(window.screen.width+"x"+window.screen.height)</script></td>
</tr>
<tr>
<td>颜色</td>
<td> <script>document.write(window.screen.colorDepth+"位")</script></td>
</tr>
<tr>
<td>字体平滑</td>
<td><script>document.write(window.screen.fontSmoothingEnabled)</script></td>
</tr>
<tr>
<td>appMinorVersion</td>
<td>
<script>document.write(navigator.appMinorVersion)</script>
</td>
</tr>
<tr>
<td >appCodeName</td>
<td >
<script>document.write(navigator.appCodeName)</script>
</td>
</tr>
<tr>
<td>cookieEnabled</td>
<td>
<script>document.write(navigator.cookieEnabled)</script>
</td>
</tr>
<tr>
<td >userAgent</td>
<td >
<script>document.write(navigator.userAgent)</script>
</td>
</tr>
<tr>
<td>javaEnabled</td>
<td>
<script>document.write(navigator.javaEnabled())</script>
</td>
</tr>
<tr>
<td >taintEnabled</td>
<td >
<script>document.write(navigator.taintEnabled())</script>
</td>
</tr>
</table>
</body>
</html>