CanIUse Command Line

By  on  

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:

CanIUse

CanIUse

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.

Recent Features

  • By
    Facebook Open Graph META Tags

    It's no secret that Facebook has become a major traffic driver for all types of websites.  Nowadays even large corporations steer consumers toward their Facebook pages instead of the corporate websites directly.  And of course there are Facebook "Like" and "Recommend" widgets on every website.  One...

  • By
    Creating Scrolling Parallax Effects with CSS

    Introduction For quite a long time now websites with the so called "parallax" effect have been really popular. In case you have not heard of this effect, it basically includes different layers of images that are moving in different directions or with different speed. This leads to a...

Incredible Demos

  • By
    Create Twitter-Style Dropdowns Using jQuery

    Twitter does some great stuff with JavaScript. What I really appreciate about what they do is that there aren't any epic JS functionalities -- they're all simple touches. One of those simple touches is the "Login" dropdown on their homepage. I've taken...

  • By
    Implement the Google AJAX Search API

    Let's be honest...WordPress' search functionality isn't great. Let's be more honest...no search functionality is better than Google's. Luckily for us, Google provides an awesome method by which we can use their search for our own site: the Google AJAX Search API.

Discussion

  1. Steve

    I need to get this hooked up to be an email responder bot! “Hey Steve does ${browserX} support ${featureY}?” => auto respond ;-)

  2. Dominik

    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.

  3. 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.

  4. Definitely an interesting article about this new npm tool, useful for those who like command line better then gui.

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!