Create a Custom “:checked” Pseudo Selector for MooTools 1.2
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?
![CSS Animations Between Media Queries]()
CSS animations are right up there with sliced bread. CSS animations are efficient because they can be hardware accelerated, they require no JavaScript overhead, and they are composed of very little CSS code. Quite often we add CSS transforms to elements via CSS during...
![Regular Expressions for the Rest of Us]()
Sooner or later you'll run across a regular expression. With their cryptic syntax, confusing documentation and massive learning curve, most developers settle for copying and pasting them from StackOverflow and hoping they work. But what if you could decode regular expressions and harness their power? In...
![Implement jQuery’s hover() Method in MooTools]()
jQuery offers a quick event shortcut method called hover that accepts two functions that represent mouseover and mouseout actions. Here's how to implement that for MooTools Elements.
The MooTools JavaScript
We implement hover() which accepts to functions; one will be called on mouseenter and the other...
![Create a Dynamic Flickr Image Search with the Dojo Toolkit]()
The Dojo Toolkit is a treasure chest of great JavaScript classes. You can find basic JavaScript functionality classes for AJAX, node manipulation, animations, and the like within Dojo. You can find elegant, functional UI widgets like DropDown Menus, tabbed interfaces, and form element replacements within...
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.
@thomasd: I like your “novalue” pseudo selector. As for your question, try this:
input[value=”]
David, your blog is the best, ever!
I love your articles, and I always use your tips.
hugs
@david: input[value=”] doesn’t work.
But the pseudo selector works quite well.
I really love mootools and the way it works!
Just a note though, :checked is already in Mootools Selectors source. http://tr.im/1n83
@Lim Chee Aun: Cool! It’s not in 1.2 so this must be new.
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