Mink Machine

Media queries and JavaScript

Mobile development and responsive design are all the rage these days and media queries are mentioned everywhere. It’s a CSS3 extension of the media types frequently used in HTML4 and CSS2. The following (very simplified) example hides a sidebar if the browser device has a max width of 500 pixels.

@media (max-device-width: 500px) { .sidebar { display: none; } }

This is of course only the tip of the iceberg. There are tons of resolutions and variations to consider (for instance have a look at Andy Clarke’s Hardboiled CSS3 Media Queries), media queries are not supported by IE8 or older (live with it) and so on. But when used correctly, media queries can be a powerful tool.

However, media queries are indeed a nice asset when it comes to CSS, but unfortunately they will not prevent the browser from downloading many other things which may be superfluous on mobile devices.

Since many external scripts are large, this could be a problem. For instance, the minified and Gzipped version of JQuery is about ten times smaller in filesize than the regular version. It could also download a lot of images which may be unused on certain devices.

It would be nice to have a media query equivalent for JavaScript and other resources. There are some work-arounds, such as the one described by Peter-Paul Koch in Combining media queries and JavaScript, but I hope this area will improve in the future.

Related posts

Comments

No comments yet.

Post a comment

Your email address will not be published. Required fields are marked *

Featured stories

On the Trans-Siberian

"Since the toilets were locked during the seven hour stop, we had to bribe the provodnitsas to use the facilities. Then came the Mongols."

The fairytale castles of Sintra

"The Portuguese town of Sintra is famous for many beautiful castles. Palácio Nacional da Pena is arguably the most stunning of the lot. "

Roaming in Valletta

"I passed the statue of Jean de Valette, the 49th Grand Master who laid the foundation stone to Valletta in 1566, to gaze at the golden interior of St. John’s Co-Cathedral, where he is buried in the crypt."

Chilling in Chile

"My weary feet has reached Valparaiso. After almost a month of traveling across the South American continent I realize that this is as far south as I will come, due to weather conditions."

Memories of Skye

"The countryside is charming and some places even have coffee."

A journey through Iran

"I woke up freezing on a Persian rug with aching back. Behind a corner I saw the damned rooster that kept me awake during many hours."

Instagram