MooTools: Set Style Per Media

By  on  

I'd bet one of the most used MooTools methods is the setStyle() method, which allows you to set CSS style declarations for an element. One of the limitations of MooTools' setStyle() method is that it sets the specific style for all medias. What if I want to set a style for only a specific media type? I've created a setStile() method that allows you to specify the media for which a style is set.

The MooTools JavaScript

Element.implement({
	'setStile': function(key,value,media) {
		var style = $$('style[media=' + media + ']')[0];
		if(!style) {
			style = new Element('style',{
				'type': 'text/css',
				'media': media
			});
			style.inject(document.head);
		}
		if(!this.get('id')) {
			this.set('id',$uid(this));
		}
		style.set('text',style.get('text') + '#' + this.get('id') + '{ ' + key + ':' + value + '; }');
		return this;
	},
	
	'setStiles': function(keyvalhash,media) {
		for(var key in keyvalhash) {
			this.setStile(key,keyvalhash[key],media);
		}
		return this;
	}
});

Example Usages

$('nonoprint').setStile('color','#f00','print');
$('nonoprint').setStile('display','inline','print');
$('nonoprint').setStile('border','1px solid #00f','print');
$('nonoprint').setStiles({
	'background-color': '#fffea1',
	'font-weight': 'bold',
	'opacity': '.5'
},'print');

The Post-Use HTML View

<style type="text/css" media="print">
#nonoprint{ color:#f00; }
#nonoprint{ display:inline; }
#nonoprint{ border:1px solid #00f; }
#nonoprint{ background-color:#fffea1; }
#nonoprint{ font-weight:bold; }
#nonoprint{ opacity:.5; }
</style>

Obviously, as you can see from the Post-Use HTML, this isn't an elegant solution but it works in all browsers I tested except Internet Explorer. Hopefully a better solution is presented in the future.

Recent Features

Incredible Demos

  • By
    dwProgressBar v2:  Stepping and Events

    dwProgressBar was a huge hit when it debuted. For those of you who didn't catch my first post, dwProgressBar is a MooTools 1.2-based progress bar which allows for as much flexibility as possible. Every piece of dwProgressBar can be controlled by CSS...

  • By
    Introducing MooTools Dotter

    It's best practice to provide an indicator of some sort when performing an AJAX request or processing that takes place in the background. Since the dawn of AJAX, we've been using colorful spinners and imagery as indicators. While I enjoy those images, I am...

Discussion

  1. I’ve noticed that this code no longer works in IE8. This line seems to be causing the problems:

    style.set('text',style.get('text') + '#' + this.get('id') + '{ ' + key + ':' + value + '; }');
    

    Any ideas?

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