javascript一个判断浏览器类型的函数（类）_javascript技巧

初学Javascript时写的一个判断浏览器类型的函数（类），不是很完善，不过毕竟第一次写东东，纪念一下！

<meta http-equiv="content-type" content="text/html; charset=gb2312"> <meta name="generator" content="PSPad editor, www.pspad.com"> <meta name="Author" content="Yemoo"> <title>Get Exact Browser Type</title> <script type="text/javascript"> /*--------------------------------------------------------------- --this function can return the actual browser name and version.-- --USESAGE:There are Two Methods(See the end of this function) -- --Create By Yemoo. DateTime:2006-2-3 21:53:37 -- ---------------------------------------------------------------*/ function browserinfo(){ var Browser_Name=navigator.appName; var Browser_Version=parseFloat(navigator.appVersion); var Browser_Agent=navigator.userAgent; var Actual_Version,Actual_Name; var is_IE=(Browser_Name=="Microsoft Internet Explorer"); var is_NN=(Browser_Name=="Netscape"); if(is_NN){ //upper 5.0 need to be process,lower 5.0 return directly if(Browser_Version>=5.0){ var Split_Sign=Browser_Agent.lastIndexOf("/"); var Version=Browser_Agent.indexOf(" ",Split_Sign); var Bname=Browser_Agent.lastIndexOf(" ",Split_Sign); Actual_Version=Browser_Agent.substring(Split_Sign+1,Version); Actual_Name=Browser_Agent.substring(Bname+1,Split_Sign); } else{ Actual_Version=Browser_Version; Actual_Name=Browser_Name; } } else if(is_IE){ var Version_Start=Browser_Agent.indexOf("MSIE"); var Version_End=Browser_Agent.indexOf(";",Version_Start); Actual_Version=Browser_Agent.substring(Version_Start+5,Version_End) Actual_Name=Browser_Name; if(Browser_Agent.indexOf("Maxthon")!=-1){ Actual_Name+="(Maxthon)"; } else if(Browser_Agent.indexOf("Opera")!=-1){ Actual_Name="Opera"; var tempstart=Browser_Agent.indexOf("Opera"); var tempend=Browser_Agent.length; Actual_Version=Browser_Agent.substring(tempstart+6,tempend) } } else{ Actual_Name="Unknown Navigator" Actual_Version="Unknown Version" } /*------------------------------------------------------------------------------ --Your Can Create new properties of navigator(Acutal_Name and Actual_Version) -- --Userage: -- --1,Call This Function. -- --2,use the property Like This:navigator.Actual_Name/navigator.Actual_Version;-- ------------------------------------------------------------------------------*/ navigator.Actual_Name=Actual_Name; navigator.Actual_Version=Actual_Version; /*--------------------------------------------------------------------------- --Or Made this a Class. -- --Userage: -- --1,Create a instance of this object like this:var browser=new browserinfo;-- --2,user this instance:browser.Version/browser.Name; -- ---------------------------------------------------------------------------*/ this.Name=Actual_Name; this.Version=Actual_Version; } browserinfo(); document.write("浣</script>