如何使用JavaScript检测我的浏览器版本和 *** 作系统？

如何使用JavaScript检测我的浏览器版本和 *** 作系统？

检测浏览器的详细信息：

var nVer = navigator.appVersion;var nAgt = navigator.userAgent;var browserName  = navigator.appName;var fullVersion  = ''+parseFloat(navigator.appVersion); var majorVersion = parseInt(navigator.appVersion,10);var nameOffset,verOffset,ix;// In Opera, the true version is after "Opera" or after "Version"if ((verOffset=nAgt.indexOf("Opera"))!=-1) { browserName = "Opera"; fullVersion = nAgt.substring(verOffset+6); if ((verOffset=nAgt.indexOf("Version"))!=-1)    fullVersion = nAgt.substring(verOffset+8);}// In MSIE, the true version is after "MSIE" in userAgentelse if ((verOffset=nAgt.indexOf("MSIE"))!=-1) { browserName = "Microsoft Internet Explorer"; fullVersion = nAgt.substring(verOffset+5);}// In Chrome, the true version is after "Chrome" else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) { browserName = "Chrome"; fullVersion = nAgt.substring(verOffset+7);}// In Safari, the true version is after "Safari" or after "Version" else if ((verOffset=nAgt.indexOf("Safari"))!=-1) { browserName = "Safari"; fullVersion = nAgt.substring(verOffset+7); if ((verOffset=nAgt.indexOf("Version"))!=-1)    fullVersion = nAgt.substring(verOffset+8);}// In Firefox, the true version is after "Firefox" else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) { browserName = "Firefox"; fullVersion = nAgt.substring(verOffset+8);}// In most other browsers, "name/version" is at the end of userAgent else if ( (nameOffset=nAgt.lastIndexOf(' ')+1) <(verOffset=nAgt.lastIndexOf('/')) ) { browserName = nAgt.substring(nameOffset,verOffset); fullVersion = nAgt.substring(verOffset+1); if (browserName.toLowerCase()==browserName.toUpperCase()) {  browserName = navigator.appName; }}// trim the fullVersion string at semicolon/space if presentif ((ix=fullVersion.indexOf(";"))!=-1)   fullVersion=fullVersion.substring(0,ix);if ((ix=fullVersion.indexOf(" "))!=-1)   fullVersion=fullVersion.substring(0,ix);majorVersion = parseInt(''+fullVersion,10);if (isNaN(majorVersion)) { fullVersion  = ''+parseFloat(navigator.appVersion);  majorVersion = parseInt(navigator.appVersion,10);}document.write('' +'Browser name  = '+browserName+'<br>' +'Full version  = '+fullVersion+'<br>' +'Major version = '+majorVersion+'<br>' +'navigator.appName = '+navigator.appName+'<br>' +'navigator.userAgent = '+navigator.userAgent+'<br>')

源Javascript：浏览器名称

正在检测 *** 作系统：

// This script sets OSName variable as follows:// "Windows"    for all versions of Windows// "MacOS"      for all versions of Macintosh OS// "Linux"      for all versions of Linux// "UNIX"       for all other UNIX flavors // "Unknown OS" indicates failure to detect the OSvar OSName="Unknown OS";if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS";if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX";if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux";document.write('Your OS: '+OSName);

源Javascript：OS检测。

    var nVer = navigator.appVersion;    var nAgt = navigator.userAgent;    var browserName  = navigator.appName;    var fullVersion  = ''+parseFloat(navigator.appVersion);    var majorVersion = parseInt(navigator.appVersion,10);    var nameOffset,verOffset,ix;    // In Opera, the true version is after "Opera" or after "Version"    if ((verOffset=nAgt.indexOf("Opera"))!=-1) {     browserName = "Opera";     fullVersion = nAgt.substring(verOffset+6);     if ((verOffset=nAgt.indexOf("Version"))!=-1)       fullVersion = nAgt.substring(verOffset+8);    }    // In MSIE, the true version is after "MSIE" in userAgent    else if ((verOffset=nAgt.indexOf("MSIE"))!=-1) {     browserName = "Microsoft Internet Explorer";     fullVersion = nAgt.substring(verOffset+5);    }    // In Chrome, the true version is after "Chrome"    else if ((verOffset=nAgt.indexOf("Chrome"))!=-1) {     browserName = "Chrome";     fullVersion = nAgt.substring(verOffset+7);    }    // In Safari, the true version is after "Safari" or after "Version"    else if ((verOffset=nAgt.indexOf("Safari"))!=-1) {     browserName = "Safari";     fullVersion = nAgt.substring(verOffset+7);     if ((verOffset=nAgt.indexOf("Version"))!=-1)       fullVersion = nAgt.substring(verOffset+8);    }    // In Firefox, the true version is after "Firefox"    else if ((verOffset=nAgt.indexOf("Firefox"))!=-1) {     browserName = "Firefox";     fullVersion = nAgt.substring(verOffset+8);    }    // In most other browsers, "name/version" is at the end of userAgent    else if ( (nameOffset=nAgt.lastIndexOf(' ')+1) <   (verOffset=nAgt.lastIndexOf('/')) )    {     browserName = nAgt.substring(nameOffset,verOffset);     fullVersion = nAgt.substring(verOffset+1);     if (browserName.toLowerCase()==browserName.toUpperCase()) {      browserName = navigator.appName;     }    }    // trim the fullVersion string at semicolon/space if present    if ((ix=fullVersion.indexOf(";"))!=-1)       fullVersion=fullVersion.substring(0,ix);    if ((ix=fullVersion.indexOf(" "))!=-1)       fullVersion=fullVersion.substring(0,ix);    majorVersion = parseInt(''+fullVersion,10);    if (isNaN(majorVersion)) {     fullVersion  = ''+parseFloat(navigator.appVersion);     majorVersion = parseInt(navigator.appVersion,10);    }    document.write(''     +'Browser name  = '+browserName+'<br>'     +'Full version  = '+fullVersion+'<br>'     +'Major version = '+majorVersion+'<br>'     +'navigator.appName = '+navigator.appName+'<br>'     +'navigator.userAgent = '+navigator.userAgent+'<br>'    )    // This script sets OSName variable as follows:    // "Windows"    for all versions of Windows    // "MacOS"      for all versions of Macintosh OS    // "Linux"      for all versions of Linux    // "UNIX"       for all other UNIX flavors    // "Unknown OS" indicates failure to detect the OS    var OSName="Unknown OS";    if (navigator.appVersion.indexOf("Win")!=-1) OSName="Windows";    if (navigator.appVersion.indexOf("Mac")!=-1) OSName="MacOS";    if (navigator.appVersion.indexOf("X11")!=-1) OSName="UNIX";    if (navigator.appVersion.indexOf("Linux")!=-1) OSName="Linux";    document.write('Your OS: '+OSName);