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

  • By
    Being a Dev Dad

    I get asked loads of questions every day but I'm always surprised that they're rarely questions about code or even tech -- many of the questions I get are more about non-dev stuff like what my office is like, what software I use, and oftentimes...

  • By
    Chris Coyier&#8217;s Favorite CodePen Demos

    David asked me if I'd be up for a guest post picking out some of my favorite Pens from CodePen. A daunting task! There are so many! I managed to pick a few though that have blown me away over the past few months. If you...

Incredible Demos

  • By
    JavaScript Copy to Clipboard

    "Copy to clipboard" functionality is something we all use dozens of times daily but the client side API around it has always been lacking; some older APIs and browser implementations required a scary "are you sure?"-style dialog before the content would be copied to clipboard -- not great for...

  • By
    Multiple Backgrounds with CSS

    Anyone that's been in the web development industry for 5+ years knows that there are certain features that we should have had several years ago. One of those features is the HTML5 placeholder; we used JavaScript shims for a decade before placeholder came...

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!