javascript判断当前系统和使用浏览器-优快云博客

本文介绍了一种通过JavaScript来检测用户使用的浏览器类型、版本及操作系统的简单方法。此脚本能够识别包括Chrome、Safari、IE等在内的主流浏览器，并判断是否为特定的操作系统如Windows、MacOS或Linux。

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<html>
<head>
<title>Determine the system</title>
<script language="javascript">
var ua = navigator.userAgent.toLowerCase();
var isStrict = document.compatMode == "CSS1Compat", // 是否定义DOCUMENT类型
isOpera = ua.indexOf("opera")>-1, // 是Opera
isChrome = ua.indexOf("chrome")>-1, //是Chrome
isSafari = !isChrome&&(/webkit|khtml/).test(ua), //是Safari
isSafari3 = isSafari&&ua.indexOf("webkit/5")!= -1, // Safari3
isIE = !isOpera&&ua.indexOf("msie")>-1, //IE6
isIE7 = !isOpera&&ua.indexOf("msie 7")>-1, // IE7
isIE8 = !isOpera&&ua.indexOf("msie 8")>-1, //IE8
isQQ = !ua.indexOf("mqqbrowser")>-1, //QQ
isGecko = !isSafari&&!isChrome&&ua.indexOf("gecko")>-1, // Gecko内核
isGecko3 = isGecko&&ua.indexOf("rv:1.9")>-1, // Gecko3内核
isBorderBox = isIE&&!isStrict, // 使用盒模型
isWindows = (ua.indexOf("windows")!= -1||ua.indexOf("win32")!= -1), // 是Windows系统
isMac = (ua.indexOf("macintosh")!= -1||ua.indexOf("mac os x")!= -1), // 是MacOS系统
isAir = (ua.indexOf("adobeair")!= -1), // 是用Adobe Air浏览
isLinux = (ua.indexOf("linux")!= -1), // 是Linux系统
isSecure = window.location.href.toLowerCase().indexOf("https") === 0; // 是SSL浏览
if(isOpera)
{
document.write("this is Opera browser ");
}
if(isChrome)
{
document.write("this is Chrome browser ");
}
if(isSafari)
{
document.write("this is Safari browser ");
}
if(isSafari3)
{
document.write("this is Safari3 browser ");
}
if(isIE)
{
document.write("this is IE browser ");
}
if(isIE7)
{
document.write("this is IE7 browser ");
}
if(isIE8)
{
document.write("this is IE8 browser ");
}
if(isGecko)
{
document.write("this is Gecko browser ");
}
if(isGecko3)
{
document.write("this is Geck3 browser ");
}
if(isBorderBox)
{
document.write("this is BorderBox browser ");
}
if(isWindows)
{
document.write("this is windows system ");
}
if(isLinux)
{
document.write("this is Linux system ");
}
if(isMac)
{
document.write("this is Mac system ");
}
if(isAir)
{
document.write("this is Air browser ");
}
if(isSecure)
{
document.write("this is SSl ");
}
document.write(ua);
</script>
</head>
<body>
</body>
</html>