问题
I'm trying to find a (preferably open source) JS library to determine as much information as possible about the user's Web browser environment. I know it's possible to get such data as:
- Screen resolution,
- User-Agent, Accept-Language and other preferences usually sent in HTTP headers,
- Installed plug-ins (through
navigator.plugins), - Whether a particular browser feature is supported (SVG support, DOM capabilities)
What I'm looking for is a library which gathers such information and makes it available under a common cross-browser interface (there are a bunch of incompatibilties in how browsers report installed plugins, for example). I found Modernizr which can detect HTML5-related functionality, but similar projects which report more generic information, such as the data listed above, would be more useful.
回答1:
I maintain Common Feature Tests project, but it is merely a set of feature tests online, not a library. Feel free to use any of them on your page.
Sometimes I also use this simple test page for testing unknown environments (all tests there are really trivial one liners).
回答2:
You should definitely check out Panopticlick, an academic study (with detailed explanation on theory, and supporting data) to determine what makes a browser installation unique.
Panopticlick uses a slightly outdated version of this plugin detection script...
来源：https://stackoverflow.com/questions/1436994/javascript-libraries-to-detect-browser-capabilities-plug-ins