Identifying Opera...

[Vladdy]

When dealing with Opera the navigator.appName is unreliable since the damn thing has a disguise option "Identify as..." :rolleyes:
Apparently Opera does not support for...in statment so I figured the following fragment would identify the pretender:

navSummary='';
for(i in navigator) navSummary+=i + ': ' + navigator[i] + '<br />';
if(navSummary.length == 0)
browser = 'pretender';

Would like to hear about other ways...

[glenngv]

but even if it can disguise as IE, it still has the word Opera in its user agent:

Mozilla/4.0 (compatible; MSIE 5.0; Windows 2000) Opera 6.01 [en]

[boywonder]

Far as I know ( and as Glenn pointed out ) you can always flag an Opera browser simply by finding "Opera" in the UA string.

[realisis]

Hi Vladdy,

<splittinghairs>Opera refuses to enumerate almost all Obj, Props, Meths, etc, but it does support the for...in loop:

for (eachProp in window.RegExp) etc...

prints out the nine $...

[Vladdy]

thanks, all.

:o should have thought about .userAgent myself :o

[RoyW]

This might be usefull
http://www.opera.com/docs/specs/js/

I tend to use
if(window.opera)
{
//do opera stuff
}

as only Opera should have the window.opera attribute.

[glenngv]

Originally posted by RoyW

I tend to use
if(window.opera)
{
//do opera stuff
}

as only Opera should have the window.opera attribute.

but that is not safe if you have a variable named opera, which of course you wouldn't do, but who knows one way or another, one site would use it :D

var opera = "Metropolitan Opera";
if(window.opera)
{
//do opera stuff
}