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Is there a software or script that can detect the internet browser functionalities? (e.g. Support CSS3, HTML5, etc)

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Please explain in more detail what you want to accomplish. – Daniel Beck Oct 25 '11 at 5:25
I am looking something like Acid3 but can be download as a software and covers more standards beside XHTML, DOM, etc – Larry Morries Oct 25 '11 at 5:31
I think this belongs on SO. – Stefan Kendall Oct 25 '11 at 5:36
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@StefanKendall No, since it's not server side. He's a user interested in finding out the capabilities of the browsers he uses. Larry, am I right? Your question is somewhat ambiguous here. – Daniel Beck Oct 25 '11 at 5:40
@Daniel Beck: That would still be an SO question, unless he really wants to load up a browser and see what it supports. Even then, I'm not sure such a tool exists without writing it yourself, as all the browsers are moving targets. I'm guessing "software" is a futz, as the author is a non-english native. – Stefan Kendall Oct 25 '11 at 5:43
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closed as off topic by grawity, random♦ Oct 29 '11 at 3:08

Questions on Super User are expected to generally relate to computer software or computer hardware, within the scope defined in the faq.

3 Answers

up vote 5 down vote accepted

Modernizr does just this.

Modernizr is an open-source JavaScript library that helps you build the next generation of HTML5 and CSS3-powered websites.

aking advantage of the new capabilities of HTML5 and CSS3 can mean sacrificing control over the experience in older browsers. Modernizr 2 is your starting point for making the best websites and applications that work exactly right no matter what browser or device your visitors use.

Thanks to the new Media Query tests and built-in YepNope.js micro-library as Modernizr.load(), you can now combine feature detection with media queries and conditional resource loading. That gives you the power and flexibility to optimize for every circumstance.

Check out the full list of features that Modernizr detects, or learn more about conditional resource loading with Modernizr.

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I am looking for a 'more" complete browser functionalities detection. (It should at least covers 95% of existing standards) – Larry Morries Oct 25 '11 at 5:40
What "standards" do you need to cover? – Stefan Kendall Oct 25 '11 at 5:42
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I can't imagine a more comprehensive suite for "existing standards" than Modernizr – Sathya♦ Oct 25 '11 at 6:12
@LarryMorries There are probably far more applicable standards than you can possibly imagine. Something like "at least 95% of existing standards" is unrealistic. – Daniel Beck Oct 25 '11 at 21:33
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up vote -1 down vote

CSS3 and HTML5 are a set of features that browsers will support fully, in part, or not at all.

So what you really need to do is determine whether the specific features you need are present.

You can do this for many features using the jquery.support module.

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up vote -1 down vote

No, since most of it is only visible to the end user (Do you really want an executable to pop up a few hundred yes/no dialog boxes? "Can you see it now? [Yes] [No]"). What can be done is a best guess based on the user agent of or JavaScript objects in the browser and the known properties of each.

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This is absolutely the wrong way to solve this problem and a bad and largely incorrect. – Stefan Kendall Oct 25 '11 at 5:37
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It's interesting how this answer gets downvotes while a JavaScript script that does just this gets upvotes. – Ignacio Vazquez-Abrams Oct 25 '11 at 6:20
@IgnacioVazquez-Abrams: It's the herd mentality. . . – surfasb Oct 25 '11 at 6:27
@surfasb: Or experience dealing with feature detection, and what works and what doesn't. Sometimes "the herd" is right. – Stefan Kendall Oct 25 '11 at 16:57
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