CanIUse Command Line
Every front-end developer should be well acquainted with CanIUse, the website that lets you view browser support for browser features. When people criticize my blog posts for not detailing browser support for features within the post, I tell them to check CanIUse: always up to date, unlike posts on any blog. While I know to use the CanIUse website, I recently found out that Sam Gentle has an accompanying Node.js CanIUse module for looking up browser support.
To install the utility, use a typical npm install command:
# Install globally for less hassle
npm install -g caniuse-cmd
With the caniuse command available, you can look up feature support from the command line:
The display of results is pretty and it provides a listing of different matching features if the lookup is vague. And because we can get this information in an automated way, you can probably write a decent scraper with cURL and other tools.
![Write Better JavaScript with Promises]()
You've probably heard the talk around the water cooler about how promises are the future. All of the cool kids are using them, but you don't see what makes them so special. Can't you just use a callback? What's the big deal? In this article, we'll...
![7 Essential JavaScript Functions]()
I remember the early days of JavaScript where you needed a simple function for just about everything because the browser vendors implemented features differently, and not just edge features, basic features, like addEventListener and attachEvent. Times have changed but there are still a few functions each developer should...
![Check All/None Checkboxes Using MooTools]()
There's nothing worse than having to click every checkbox in a list. Why not allow users to click one item and every checkbox becomes checked? Here's how to do just that with MooTools 1.2.
The XHTML
Note the image with the ucuc ID -- that...
![Create a Simple News Scroller Using Dojo]()
My journey into Dojo JavaScript has been exciting and I'm continuing to learn more as I port MooTools scripts to Dojo. My latest experiment is porting a simple new scroller from MooTools to Dojo. The code is very similar!
The HTML
The news items...
I need to get this hooked up to be an email responder bot! “Hey Steve does
${browserX}support${featureY}?” => auto respond ;-)How about just adding canIuse as a search engine to your browser, like so http://caniuse.com/#search=%s?
Simply typing “c webp” into my browser gives me even nicer formatted results.
Sadly the output is not very useful for automated processing. It would’ve been nice if this could be implemented in a gulp-task, scanning CSS for a defined set of supported browsers, and if a css-declaration wasn’t supported it would throw an error.
But as your example of ‘transform’ shows, it returns things like JPEG2000, so output parsing is required and tedious. Plus it seems that there is no option to print a simple boolean instead of fancy ticks and crosses.
There’s also this package available via npm.
https://www.npmjs.com/package/caniuse-api
Perhaps this would work better for that task.
Definitely an interesting article about this new npm tool, useful for those who like command line better then gui.