Please note: This project is deprecated at Zynga and is no longer maintained.

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Overview

style.js is a tiny JavaScript utility that lets you write CSS in a JS object notation closely resembling actual CSS syntax.

Unit tests.

Features

• Tiny! (1kB minified)
• Allows for templating your CSS (for instance, easily add a custom prefix to all class names).
• Supports .noConflict().
• Your CSS can be compiled into your JS project, eliminating the need for the client to download extra CSS files, thus improving page load performance.

Examples

Usage is pretty simple.

	style({
		body: {
			background: '#acf',
			color: 'green'
		},
		'.myclass, .yourclass': {
			border: '1px dotted #888'
		}
	});

The above code results in this being added to the document.head:

	<style class="text/css">
		body {
			background: #acf;
			color: green;
		}
		.myclass, .yourclass {
			border: 1px dotted #888;
		}
	</style>

The object notation used above is the most similar in form to actual CSS; however, it precludes the ability to specify multiple rules with the same selector, or within a particular rule, multiple properties of the same name. For the rare situations where this might be desired, you can use the alternative array notation:

	style([
		['body', { background: '#acf' }],
		['body', { color: 'green' }]
	]);

Or, more usefully:

	style({
		'.bluebutton': [
			['background-image',
				'-moz-linear-gradient(center top, #a8ccf8 0%, #76b1f8 7%, #6eadf5 33%, #2376f5 100%)'],
			['background-image',
				'-webkit-gradient(linear, 0 0, 0 100%, from(#a8ccf8), color-stop(7%, #76b1f8), color-stop(33%, #6eadf5), to(#2376f5))']
		]
	});

To avoid CSS conflicts with other components on the page, it's also useful to be able to prefix the classnames with a custom string:

	style(
		{
			'body .fancyclass': {
				color: 'chartreuse'
			}
		},
		{ prefix: 'my_' }
	);

Resulting CSS:

	<style class="text/css">
		body .my_fancyclass {
			color: chartreuse;
		}
	</style>

Options

The style() function takes an optional second parameter: options. Currently, two options are supported:

options.key

If present, this is used to uniquely identify a chunk of CSS to prevent it from being added to document more than once.

options.prefix

If present, this prefix is added to all CSS class names for this call.