MooTools Pseudo Selectors Gone Wild

By  on  

Over the past few weeks, I've covered how you can create your own pseudo selectors in MooTools. In looking at jQuery's documentation and considering other often-checked element traits, I've created a bunch more useful MooTools pseudo selectors.

The MooTools JavaScript

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

/* grab "selected" option elements */
Selectors.Pseudo.selected = function() {
	return ('option' == this.get('tag') && this.selected);
};

/* grab random elements */
/* credit:  http://blog.kassens.net/custom-pseudo-selectors */
Selectors.Pseudo.random = function(probability, local) {
	return Math.random() < (probability || .5).toFloat();
};

/* grab elements with no value */
Selectors.Pseudo.noValue = function() {
	return '' === this.value;
}

/* grab elements with a specific empty attribute */
Selectors.Pseudo.emptyAttribute = function(att) {
	return this.get(att) == '';
}

/* grab disabled elements */
Selectors.Pseudo.disabled = function() {
	return this.disabled;
}

/* grab enabled elements */
Selectors.Pseudo.enabled = function() {
	return !this.disabled;
}

/* grab each type of input */
['text','password','radio','checkbox','submit','image','reset','button','file','hidden'].each(function(type) {
	Selectors.Pseudo.(type) = function() {
		return type == this.get('type') && 'input' == this.get('tag');
	}
});

/* form element ? */
Selectors.Pseudo.input = function() {
	return 'textarea' == this.get('tag') || 'select' == this.get('tag') || 'input' == this.get('tag') || 'button' == this.get('tag');
}

Have any more to add to the pile? Share them!

Recent Features

  • By
    CSS Gradients

    With CSS border-radius, I showed you how CSS can bridge the gap between design and development by adding rounded corners to elements.  CSS gradients are another step in that direction.  Now that CSS gradients are supported in Internet Explorer 8+, Firefox, Safari, and Chrome...

  • By
    An Interview with Eric Meyer

    Your early CSS books were instrumental in pushing my love for front end technologies. What was it about CSS that you fell in love with and drove you to write about it? At first blush, it was the simplicity of it as compared to the table-and-spacer...

Incredible Demos

  • By
    MooTools 1.2 Tooltips: Customize Your Tips

    I've never met a person that is "ehhhh" about XHTML/javascript tooltips; people seem to love them or hate them. I'm on the love side of things. Tooltips give you a bit more information about something than just the element itself (usually...

  • By
    Create an Animated Sliding Button Using MooTools

    Buttons (or links) are usually the elements on our sites that we want to draw a lot of attention to. Unfortunately many times they end up looking the most boring. You don't have to let that happen though! I recently found a...

Discussion

  1. Anton

    Without steering away from the subject too much, what about grabbing all elements that have an event attached to them?

  2. @Anton: Great question. I’ll be researching this very soon, as I too have interest in such a functionality.

  3. I am a RSS feed subscriber and I don’t miss a day without visiting this blog: your MooTools tips are tremendous! and this one is very useful!

    Thanks! :)

  4. Brett

    For selecting all headers in order. like jQuery: $(“:header”)

    Selectors.Pseudo.header = function() {
    return this.get('tag') == "h1" || this.get('tag') == "h2" || this.get('tag') == "h3" || this.get('tag') == "h4" || this.get('tag') == "h5" ||this.get('tag') == 'h6'
    }

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