Create a Custom “:checked” Pseudo Selector for MooTools 1.2

By  on  

A few weeks back, I showed you how to create a custom ":selected" pseudo selector for use in MooTools. It was just a small snippet but I've found it incredibly useful, as has been the ":checked" pseudo selector I've been using.

The XHTML

	<input type="checkbox" name="mycheckbox" value="1" checked="checked" />
	<input type="radio" name="mycheckbox" value="1" checked />

Above are examples of checked elements.

The MooTools JavaScript

	Selectors.Pseudo.checked = function(){
		return ('input' == this.get('tag') && ('radio' == this.get('type') || 'checkbox' == this.get('type')) && this.checked);
	};

Of course, you could always try to retrieve checked elements using "input[checked=checked]," but that code is case-sensitive and may not always return checked elements. What other pseudo selectors may be useful for MooTools?

Raygun Pulse

Recent Features

  • By
    Create a CSS Cube

    CSS cubes really showcase what CSS has become over the years, evolving from simple color and dimension directives to a language capable of creating deep, creative visuals.  Add animation and you've got something really neat.  Unfortunately each CSS cube tutorial I've read is a bit...

  • By
    5 Awesome New Mozilla Technologies You&#8217;ve Never Heard Of

    My trip to Mozilla Summit 2013 was incredible.  I've spent so much time focusing on my project that I had lost sight of all of the great work Mozillians were putting out.  MozSummit provided the perfect reminder of how brilliant my colleagues are and how much...

Incredible Demos

  • By
    WebKit Marquee CSS:  Bringin&#8217; Sexy Back

    We all joke about the days of Web yesteryear.  You remember them:  stupid animated GIFs (flames and "coming soon" images, most notably), lame counters, guestbooks, applets, etc.  Another "feature" we thought we had gotten rid of was the marquee.  The marquee was a rudimentary, javascript-like...

  • By
    PHP / MooTools 1.2 Accordion Helper

    The MooTools Accordion plugin seems to be the plugin that people seem to have the most problems with. It's an awesome plugin, so I can see why so many people want to use it, but I think that may be part of the problem.

Discussion

  1. thomasd

    One time I needed an empty value selector for input elements:

    Selectors.Pseudo.novalue = function(){
        return (this.tagName.toLowerCase() == 'input' && this.value === '');
    };
    

    Or is there a way to test an empty attribute with CSS-Selectors, something like “input[value=]”? That didn’t worked in my case.

  2. @thomasd: I like your “novalue” pseudo selector. As for your question, try this:

    input[value=”]

  3. Marcelo

    David, your blog is the best, ever!

    I love your articles, and I always use your tips.

    hugs

  4. thomasd

    @david: input[value=”] doesn’t work.
    But the pseudo selector works quite well.

    I really love mootools and the way it works!

  5. Just a note though, :checked is already in Mootools Selectors source. http://tr.im/1n83

  6. @Lim Chee Aun: Cool! It’s not in 1.2 so this must be new.

  7. Jon Bomgardner

    I know this entry is a tad old but I was wondering if this was tested in IE8? I’m using it in a project and in the one place I use this selector IE8 has fits. Problem is I can’t see anything there that would cause it….

    Your thoughts??

    Jon

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