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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta http-equiv="x-ua-compatible" content="ie=edge" />
<meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1" />
<meta name="author" content="Nathan Smith" />
<meta name="copyright" content="Licensed under GPL and MIT." />
<meta name="description" content="Adapt.js serves CSS based on screen width." />
<title>Adapt.js - Adaptive CSS</title>
<link rel="stylesheet" href="assets/css/master.css" />
<noscript>
<link rel="stylesheet" href="assets/css/mobile.min.css" />
</noscript>
<script>
// Edit to suit your needs.
var ADAPT_CONFIG = {
// Where is your CSS?
path: 'assets/css/',
// false = Only run once, when page first loads.
// true = Change on window resize and page tilt.
dynamic: true,
// First range entry is the minimum.
// Last range entry is the maximum.
// Separate ranges by "to" keyword.
range: [
'0px to 760px = mobile.min.css',
'760px to 980px = 720.min.css',
'980px to 1280px = 960.min.css',
'1280px to 1600px = 1200.min.css',
'1600px to 1940px = 1560.min.css',
'1940px to 2540px = 1920.min.css',
'2540px = 2520.min.css'
]
};
</script>
<script src="assets/js/adapt.min.js"></script>
</head>
<body>
<div class="container_12">
<div class="grid_12">
<h1>
Adapt.js - Adaptive CSS
</h1>
</div>
<div class="grid_7">
<h2>
What is this?
</h2>
<p>
<a href="https://github.com/nathansmith/adapt/blob/master/assets/js/adapt.js">Adapt.js</a> is a lightweight (820 bytes <a href="https://github.com/nathansmith/adapt/blob/master/assets/js/adapt.min.js">minified</a>) JavaScript file that determines which CSS file to load before the browser renders a page. If the browser tilts or resizes, Adapt.js simply checks its width, and serves only the CSS that is needed, when it is needed.
</p>
<p>
A potential drawback of Adapt.js is the possibility of a brief flash of unstyled content as a new stylesheet is being fetched (think of it as “Ajax” for CSS). I have done my best to mitigate this by keeping CSS files small (3 KB). It is worth noting this is a proposed, not prescribed, approach to a problem with multiple solutions.
</p>
<p>
Other methods include: Build a <a href="http://mobify.me/">separate</a> site for <a href="http://html5boilerplate.com/mobile/">mobile</a>. Or, use <a href="http://www.w3.org/TR/css3-mediaqueries/">media queries</a> to adjust layout, with a <a href="https://github.com/scottjehl/Respond">polyfill</a> for older browser support, and conditional Internet Explorer <a href="http://adactio.com/journal/4494/">comments</a> for Windows phones. Also a factor is how to handle multiple image resolutions without adding file size. Filament Group is advocating <a href="http://filamentgroup.com/lab/responsive_images_experimenting_with_context_aware_image_sizing/">context aware</a> image sizing.
</p>
</div>
<div class="grid_5">
<table class="data">
<caption>
Default CSS Files & Widths
</caption>
<thead>
<tr>
<th>
File Name
</th>
<th>
Screen Width
</th>
</tr>
</thead>
<tbody>
<tr>
<th>
<a href="assets/css/mobile.css">mobile.css</a>
</th>
<td>
below 760px
</td>
</tr>
<tr>
<th>
<a href="assets/css/720.css">720.css</a>
</th>
<td>
760px to 980px
</td>
</tr>
<tr>
<th>
<a href="assets/css/960.css">960.css</a>
</th>
<td>
980px to 1280px
</td>
</tr>
<tr>
<th>
<a href="assets/css/1200.css">1200.css</a>
</th>
<td>
1280px to 1600px
</td>
</tr>
<tr>
<th>
<a href="assets/css/1560.css">1560.css</a>
</th>
<td>
1600 to 1940px
</td>
</tr>
<tr>
<th>
<a href="assets/css/1920.css">1920.css</a>
</th>
<td>
1940px to 2540px
</td>
</tr>
<tr>
<th>
<a href="assets/css/2520.css">2520.css</a>
</th>
<td>
above 2540px
</td>
</tr>
</tbody>
</table>
<p class="notice">
<a href="https://github.com/nathansmith/adapt/zipball/master">Download</a>
|
<a href="http://sonspring.com/journal/adapt-js-explained">Blog post</a>
|
<a href="https://github.com/nathansmith/adapt">GitHub repo</a>
</p>
</div>
<hr class="grid_12">
<div class="grid_7">
<pre>// Edit to suit your needs.
var ADAPT_CONFIG = {
// Where is your CSS?
path: 'assets/css/',
// false = Only run once, when page first loads.
// true = Change on window resize and page tilt.
dynamic: true,
// Optional callback... myCallback(i, width)
callback: myCallback,
// First range entry is the minimum.
// Last range entry is the maximum.
// Separate ranges by "to" keyword.
range: [
'0px to 760px = mobile.css',
'760px to 980px = 720.css',
'980px to 1280px = 960.css',
'1280px to 1600px = 1200.css',
'1600px to 1920px = 1560.css',
'1940px to 2540px = 1920.css',
'2540px = 2520.css'
]
};</pre>
</div>
<div class="grid_5">
<h3>
Configuration
</h3>
<p>
<em>For all possible options</em> — <a href="http://sonspring.com/journal/adapt-js-explained#how-to-use">Read more</a>
</p>
<p>
Adapt.js, accepts a few parameters: <code>path</code> is where your stylesheets reside, <code>dynamic</code> is a boolean (<code>true</code> or <code>false</code>) that says whether to watch the <code>window</code> for its <code>resize</code> event, also triggered by tablet or phone tilt. Widths and optional CSS files are specified in <code>range</code>. The defaults are shown in the adjacent code example. You can also specify an optional <code>callback</code> function, that will pass <code>range</code> index and width.
</p>
<hr />
<h3>
Open Source
</h3>
<p>
Just like the <a href="http://960.gs/">960 Grid System</a> itself, Adapt.js is licensed under <a href="http://www.gnu.org/licenses/gpl.html">GPL</a> and <a href="http://www.opensource.org/licenses/mit-license.php">MIT</a>. That means it is free, as in speech. If you want to use it in a product that is already licensed under the GPL, you can. Or, if you want to use it in a commercial product, you can choose the MIT license instead. No strings attached.
</p>
<p>
The code is available via <a href="https://github.com/nathansmith/adapt">GitHub</a>.
</p>
</div>
<hr class="grid_12" />
<div class="grid_4">
<h4>
Fallback
</h4>
<p>
In the case of JavaScript being purposefully disabled or unavailable, stylesheet defaults can be served via <code><noscript></code>, which is perfectly valid in the <code><head></code> for <a href="http://www.w3.org/TR/html5/scripting-1.html#the-noscript-element">HTML5</a>. Taking a <a href="http://www.lukew.com/ff/entry.asp?933">mobile first</a> approach, I specified the mobile.css file, assuming devices without JS capabilities are likely to be less capable “feature” phones.
</p>
</div>
<div class="grid_4 push_4">
<h4>
“It Depends”
</h4>
<p>
As with any field in which technological methods are open for debate, there is the danger of religious fanaticism, where we each rally behind a respective technique and defend it vehemently. I would advise you to consider your audience, weigh the options, and find an approach that makes sense for that particular context.
</p>
</div>
<div class="grid_4 pull_4">
<h4>
Background
</h4>
<p>
This whole browser resizing craze was started by none other than the inestimable <a href="http://ethanmarcotte.com/">Ethan Marcotte</a>, when he wrote his seminal article for A List Apart, entitled <a href="http://www.alistapart.com/articles/responsive-web-design/">Responsive Web Design</a>. Since then, some have <a href="http://tripleodeon.com/2010/10/not-a-mobile-web-merely-a-320px-wide-one/">criticized</a> <code>@media</code> queries as <a href="http://www.cloudfour.com/css-media-query-for-mobile-is-fools-gold/">fool’s gold</a>. Also worth reading are <a href="http://adactio.com/journal/1716/">One Web</a> and <a href="http://unstoppablerobotninja.com/entry/toffee-nosed/">Toffee-Nosed</a>, further defining responsiveness.
</p>
</div>
<hr class="grid_12" />
<div class="grid_3">
<p>
<small>
Licensed under <a href="http://www.gnu.org/licenses/gpl.html">GPL</a> and <a href="http://www.opensource.org/licenses/mit-license.php">MIT</a>.
</small>
</p>
</div>
<div class="grid_6 align_center">
<p>
<small>
Powered by <a href="https://github.com/nathansmith/adapt/blob/master/assets/js/adapt.js">Adapt.js</a> + <a href="http://960.gs/">960.gs</a>.
|
Repository at <a href="https://github.com/nathansmith/adapt">GitHub</a>.
</small>
</p>
</div>
<div class="grid_3 align_right">
<p>
<small>
Custom grids via <a href="http://grids.heroku.com/">SprySoft</a>.
</small>
</p>
</div>
</div>
</body>
</html>