javascript一个判断浏览器类型的函数（类）

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！







Get Exact Browser Type



/*---------------------------------------------------------------
--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("你使用的浏览器是:"+navigator.Actual_Name+",版本号:"+navigator.Actual_Version);



[Ctrl+A 全选 注:如需引入外部Js需刷新才能执行]