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
    Control Element Outline Position with outline-offset

    I was recently working on a project which featured tables that were keyboard navigable so obviously using cell outlining via traditional tabIndex=0 and element outlines was a big part of allowing the user navigate quickly and intelligently. Unfortunately I ran into a Firefox 3.6 bug...

  • By
    MooTools Zebra Tables Plugin

    Tabular data can oftentimes be boring, but it doesn't need to look that way! With a small MooTools class, I can make tabular data extremely easy to read by implementing "zebra" tables -- tables with alternating row background colors. The CSS The above CSS is extremely basic.

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!