April 2013
Intermediate to advanced
264 pages
7h 44m
English
Content preview from The Modern Web
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Media Queries in JavaScript
The benefit of media queries in CSS is obvious, so you shouldn’t be surprised that they have been adopted into JavaScript as well. This means you can run functions or load in more external scripts depending on device capabilities, leading to sympathetic and improved behavior as well as presentation.
The matchMedia() method is used to run the queries, which are provided in a string as an argument. Try running this in your developer console:
window.matchMedia('screen and (min-width: 800px)');
The result of this code is a MediaQueryList object, and how it appears in your console depends on the browser and tools you use; Figure 3-4 shows the result when I enter this query into Firebug.
Figure 3-4. The result of running ...
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.