browser-feature-detection

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the best way to detect browser in js

There are lots of ways for browser detecting in JavaScript. As far as i know, using navigator.userAgent or det开发者_高级运维ecting features (like XMLHttpRequest) and so on.[详细]

2023-04-11 22:56 分类：问答
Detecting browsers that don't support onunload/onbeforeunload

Of all the browsers, it seems that only Opera doesn\'t support onunload/onbeforeunload events. (It\'s been fifteen years now, Opera!) Solutions for this issue have been covered many times, here for ex[详细]

2023-04-08 10:26 分类：问答
iPad version detection in JavaScript

Is it possible to check for the iPad version (1 or 2) in a web application? As the user agent looks identical (see http://www.webtrends.com/Support/KnowledgeBase/SolutionDetail.aspx?Id=50140000000acbi[详细]

2023-04-04 07:10 分类：问答
How to detect `focusin` support?

Thanks to Perfection kills, we can use the following JavaScript to detect event support: function hasEvent(ev) {[详细]

2023-04-03 02:06 分类：问答
How do I find browser plugins that are installed but not active/enabled?

I have seen solutions to find out if a plugin like reader or flash in installed. Is it possible to detect if a plugin is activated or not through开发者_JAVA百科 JavaScript?[详细]

2023-03-26 02:14 分类：问答
Is there a way to detect 3G and 2G connections speed on mobile phones and handheld devices?

Is there a way to detect 3G and 2G connections on mobile phones and handheld devices? Like If I want to deliver High-end Website when u开发者_高级运维ser is on 3G and Highly optimized version if user[详细]

2023-03-24 05:13 分类：问答
User analytics based on feature support instead of browser versions, etc

If you have done any CSS or JavaScript you should know to rely on browser features and not brand and version.[详细]

2023-03-13 09:47 分类：问答
How can I tell how a website is determining if the browser has JS enabled?

We have a Perl script that emulates a browser using LWP::UserAgent to login to a website and download some data. Recently that website was changed so that you have to have JavaScript enabled in order[详细]

2023-03-05 13:58 分类：问答
Reliably detecting <img> tag support for SVG

I\'m currently doing some redesign of a website, basically just upgrading it to a more up-to-date look and trying to make it as resolution independent as possible, and in the name of resolution indepe[详细]

2023-01-24 09:18 分类：问答
Javascript: How can I delay returning a value for img.complete

I\'ve written a script to test for SVG support in the IMG tag: function SVGinIMG() { var SVGdata = \'data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHdpZHRoPSIyNzUiIGhl[详细]

2023-01-16 19:52 分类：问答