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Javascript BrowserOS detection sources

Browser detection Java Script collection


These are our basic Javascript browser detection scripts.
The main javascript browser detection script has been tested on every browser we have been able to get a hold of,
from Opera 4-7, Mozilla 0.9-1.7, Firebird 0.6/0.7, Firefox 0.8-9, Netscape 3-4, 6.2, 7.x,
to IE 4.x-6.x, as well as on the new Safari/konqueror code based Mac browsers.
They are being used in one form or another on our most of our sites. The main detection
script has recently undergone a complete revision, and should do a much better job for you now.

http://techpatterns.com/downloads/javascript_browser_detection.php



It uses navigator.vendor wherever possible, because this property is much more reliable than the good old navigator.userAgent.
I also ported the whole script to one neat object that can be dropped into any script.

http://www.quirksmode.org/blog/archives/2006/07/browser_detect.html

Until one browser remains standing on the web (if ever),
browser detection will continue to be part of any good JavaScripter's life.
Whether you're gliding a div across the screen or creating an image rollover,
it's fundamental that only relevant browsers pick up on your code.
In this tutorial we'll probe the navigator object of JavaScript,
and show how to use it to perform browser detection, whether the subject is Firefox,
Internet Explorer 6, or even Opera 8.

http://www.javascriptkit.com/javatutors/navigator.shtml


http://www.quirksmode.org/js/detect.html





Full Featured Javascript Browser/OS detection

/*
Script Name: Full Featured Javascript Browser/OS detection
Authors: Harald Hope, Tapio Markula, Websites: http://techpatterns.com/
http://www.nic.fi/~tapio1/Teaching/index1.php3
Script Source URI: http://techpatterns.com/downloads/javascript_browser_detection.php
Version 4.2.4
Copyright (C) 29 June 2007

This program is free software; you can redistribute it and/or modify it under
the terms of the GNU General Public License as published by the Free Software
Foundation; either version 3 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT
ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
FOR A PARTICULAR PURPOSE. See the GNU General Public License for more details.

Get the full text of the GPL here: http://www.gnu.org/licenses/gpl.txt

Coding conventions:
http://cvs.sourceforge.net/viewcvs.py/phpbb/phpBB2/docs/codingstandards.htm?rev=1.3
*/

/*************************************************************
Full version, use it if you are pushing css to its functional limits, and/or are using
specialized javascript.

Remember, always use method or object testing as your first choice, for example, if ( dom ) { statement; };

This browser detection includes all possibilities I think for most browsers.
Let me know if you find an error or a failure to properly detect, or if there
is a relevant browser that has special needs for detection at our tech forum:
http://techpatterns.com/forums/forum-11.html
The main script is separated from the initial netscape 4 detection due to certain bugs in
netscape 4 when it comes to unknown things like d.getElementById. The variable declarations
of course are made first to make sure that all the variables are global through the page,
otherwise a javascript error will occur because you are trying to use an undeclared variable.

We test for both browser type (ie, op, or moz/netscape > 6) and version number, then place
the version number into a variable which can be tested for < or > values, such as
if (moz && nu> 1.1){....statement....;}
This seems quite reliable, especially for Opera and Mozilla, where there is no other
easy way to get the actual version number.

For more in depth discussion of css and browser issues go to:
http://www.nic.fi/~tapio1/Teaching/DynamicMenusb.php#detections
http://www.nic.fi/~tapio1/Teaching/FAQ.php3

***************************************************************/
//initialization, browser, os detection
var d, dom, nu='', brow='', ie, ie4, ie5, ie5x, ie6, ie7;
var ns4, moz, moz_rv_sub, release_date='', moz_brow, moz_brow_nu='', moz_brow_nu_sub='', rv_full='';
var mac, win, old, lin, ie5mac, ie5xwin, konq, saf, op, op4, op5, op6, op7;

d=document;
n=navigator;
nav=n.appVersion;
nan=n.appName;
nua=n.userAgent;
old=(nav.substring(0,1)<4);
mac=(nav.indexOf('Mac')!=-1);
win=( ( (nav.indexOf('Win')!=-1) || (nav.indexOf('NT')!=-1) ) && !mac)?true:false;
lin=(nua.indexOf('Linux')!=-1);
// begin primary dom/ns4 test
// this is the most important test on the page
if ( !document.layers )
{
 dom = ( d.getElementById ) ? d.getElementById : false;
}
else {
 dom = false;
 ns4 = true;// only netscape 4 supports document layers
}
// end main dom/ns4 test

op=(nua.indexOf('Opera')!=-1);
saf=(nua.indexOf('Safari')!=-1);
konq=(!saf && (nua.indexOf('Konqueror')!=-1) ) ? true : false;
moz=( (!saf && !konq ) && ( nua.indexOf('Gecko')!=-1 ) ) ? true : false;
ie=((nua.indexOf('MSIE')!=-1)&&!op);
if (op)
{
 str_pos=nua.indexOf('Opera');
 nu=nua.substr((str_pos+6),4);
 brow = 'Opera';
}
else if (saf)
{
 str_pos=nua.indexOf('Safari');
 nu=nua.substr((str_pos+7),5);
 brow = 'Safari';
}
else if (konq)
{
 str_pos=nua.indexOf('Konqueror');
 nu=nua.substr((str_pos+10),3);
 brow = 'Konqueror';
}
// this part is complicated a bit, don't mess with it unless you understand regular expressions
// note, for most comparisons that are practical, compare the 3 digit rv nubmer, that is the output
// placed into 'nu'.
else if (moz)
{
 // regular expression pattern that will be used to extract main version/rv numbers
 pattern = /[(); \n]/;
 // moz type array, add to this if you need to
 moz_types = new Array( 'Firebird', 'Phoenix', 'Firefox', 'Iceweasel', 'Galeon', 'K-Meleon', 'Camino', 'Epiphany', 'Netscape6', 'Netscape', 'MultiZilla', 'Gecko Debian', 'rv' );
 rv_pos = nua.indexOf( 'rv' );// find 'rv' position in nua string
 rv_full = nua.substr( rv_pos + 3, 6 );// cut out maximum size it can be, eg: 1.8a2, 1.0.0 etc
 // search for occurance of any of characters in pattern, if found get position of that character
 rv_slice = ( rv_full.search( pattern ) != -1 ) ? rv_full.search( pattern ) : '';
 //check to make sure there was a result, if not do  nothing
 // otherwise slice out the part that you want if there is a slice position
 ( rv_slice ) ? rv_full = rv_full.substr( 0, rv_slice ) : '';
 // this is the working id number, 3 digits, you'd use this for
 // number comparison, like if nu >= 1.3 do something
 nu = rv_full.substr( 0, 3 );
 for (i=0; i < moz_types.length; i++)
 {
  if ( nua.indexOf( moz_types[i]) !=-1 )
  {
   moz_brow = moz_types[i];
   break;
  }
 }
 if ( moz_brow )// if it was found in the array
 {
  str_pos=nua.indexOf(moz_brow);// extract string position
  moz_brow_nu = nua.substr( (str_pos + moz_brow.length + 1 ) ,3);// slice out working number, 3 digit
  // if you got it, use it, else use nu
  moz_brow_nu = ( isNaN( moz_brow_nu ) ) ? moz_brow_nu = nu: moz_brow_nu;
  moz_brow_nu_sub = nua.substr( (str_pos + moz_brow.length + 1 ), 8);
  // this makes sure that it's only the id number
  sub_nu_slice = ( moz_brow_nu_sub.search( pattern ) != -1 ) ? moz_brow_nu_sub.search( pattern ) : '';
  //check to make sure there was a result, if not do  nothing
  ( sub_nu_slice ) ? moz_brow_nu_sub = moz_brow_nu_sub.substr( 0, sub_nu_slice ) : '';
 }
 if ( moz_brow == 'Netscape6' )
 {
  moz_brow = 'Netscape';
 }
 else if ( moz_brow == 'rv' || moz_brow == '' )// default value if no other gecko name fit
 {
  moz_brow = 'Mozilla';
 }
 if ( !moz_brow_nu )// use rv number if nothing else is available
 {
  moz_brow_nu = nu;
  moz_brow_nu_sub = nu;
 }
 if (n.productSub)
 {
  release_date = n.productSub;
 }
}
else if (ie)
{
 str_pos=nua.indexOf('MSIE');
 nu=nua.substr((str_pos+5),3);
 brow = 'Microsoft Internet Explorer';
}
// default to navigator app name
else
{
 brow = nan;
}
op5=(op&&(nu.substring(0,1)==5));
op6=(op&&(nu.substring(0,1)==6));
op7=(op&&(nu.substring(0,1)==7));
op8=(op&&(nu.substring(0,1)==8));
op9=(op&&(nu.substring(0,1)==9));
ie4=(ie&&!dom);
ie5=(ie&&(nu.substring(0,1)==5));
ie6=(ie&&(nu.substring(0,1)==6));
ie7=(ie&&(nu.substring(0,1)==7));
// default to get number from navigator app version.
if(!nu)
{
 nu = nav.substring(0,1);
}
/*ie5x tests only for functionavlity. dom or ie5x would be default settings.
Opera will register true in this test if set to identify as IE 5*/
ie5x=(d.all&&dom);
ie5mac=(mac&&ie5);
ie5xwin=(win&&ie5x);

/********************************************************
here is a sample use of the browser detector, it would load a browser specific stylesheet
for certain unsupported or improperly supported mac ie 5 css styles. The depth variable
is used so that the javascript library file can be used from anywhere in the website, you simply
insert the depth of the file like this,
...
 <head>
 <title>Browser information Page</title>

 <meta http-equiv = "Content-Type" content = "text/html; charset = iso-8859-1" />
 <link rel = "stylesheet" type = "text/css" href="css/main.css" mce_href="css/main.css" />
 <script type = "text/javascript" src="/js/browser_detection.js" mce_src="/js/browser_detection.js"> </script>
 <script type = "text/javascript>browser_css( ); </script>
 </head>

in the head of the web page after the js file is loaded.
Or if you are always referring your site to the root, you wouldn't need that
 and could delete the depth variable and just use the absolute path to the root.

function browser_css( ) {
 d = document;
 if ( ie5mac ) {
  d.write('<link rel = "stylesheet" type = "text\/css" href="/css/ie5mac.css" mce_href="/css/ie5mac.css" />');
 }
 else if ( document.layers ){
  d.write('<link rel = "stylesheet" type = "text\/css" href="/css/ns4x.css" mce_href="/css/ns4x.css" />');
 }
 else if ( ie4 ){
  d.write('<link rel = "stylesheet" type = "text\/css" href="/css/ie4.css" mce_href="/css/ie4.css" />');
 }
 else if ( moz && ( nu < 1 ) ){
  d.write('<link rel = "stylesheet" type = "text\/css" href="/css/moz_pre1-0.css" mce_href="/css/moz_pre1-0.css" />');
 }
 else {
  d.write('<link rel = "stylesheet" type = "text\/css" href="/css/moz5.css" mce_href="/css/moz5.css" />');
 }
}
********************************************************/


Posted by admin on December 04 2007 17:09:16 6317 Reads · Print
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