Selectors.md

Native: Element {#Element}

Custom class to allow all of its methods to be used with any Selectors element via the dollar function $.

Element Property: getElements {#Element:getElements}

Gets all the elements within an element that match the given selector.

Syntax:

var myElements = myElement.getElements(selector);

Arguments:

1. selector - (string) The CSS Selector to match.

Returns:

• (array) An Element collection.

Examples:

//Returns all anchors within myElement.
$('myElement').getElements('a');

//Returns all input tags with name "dialog".
$('myElement').getElements('input[name=dialog]');

//Returns all input tags with names ending with 'log'.
$('myElement').getElements('input[name$=log]');

//Returns all email links (starting with "mailto:").
$('myElement').getElements('a[href^=mailto:]');

//Adds events to all Elements with the class name 'email'.
$(document.body).getElements('a.email').addEvents({
	'mouseenter': function(){
		this.href = 'real@email.com';
	},
	'mouseleave': function(){
		this.href = '#';
	}
});

Notes:

• Supports these operators in attribute selectors:

  • '=' : is equal to
  • '*=': contains
  • '^=' : starts-with
  • '$=' : ends-with
  • '!=' : is not equal to
  • '~=' : contained in a space separated list
  • '|=' : contained in a '-' separated list

Element Property: getElement {#Element:getElement}

Same as Element:getElements, but returns only the first.

Syntax:

var anElement = myElement.getElement(selector);

Arguments:

1. selector - (string) The CSS Selector to match.

Returns:

• (mixed) An extended Element, or null if not found.

Example:

var found = $('myElement').getElement('.findMe').setStyle('color', '#f00');

Selectors.Pseudo {#Selectors}

Some default Pseudo Selectors for Selectors.

See Also:

• W3C Pseudo Classes

Selector: enabled {#Selector:checked}

Matches all Elements that are checked.

Usage:

':checked'

Examples:

$$('*:checked')

$('myForm').getElements('input:checked');

Selector: enabled {#Selector:enabled}

Matches all Elements that are enabled.

Usage:

':enabled'

Examples:

$$('*:enabled')

$('myElement').getElements(':enabled');

Selector: empty {#Selector:empty}

Matches all elements which are empty.

Usage:

':empty'

Example:

$$('div:empty');

Selector: contains {#Selector:contains}

Matches all the Elements which contains the text.

Usage:

':contains(text)'

Variables:

• text - (string) The text that the Element should contain.

Example:

$$('p:contains("find me")');

Selector: nth-child {#Selector:nth-child}

Matches every nth child.

Usage:

Nth Expression:

':nth-child(nExpression)'

Variables:

• nExpression - (string) A nth expression for the "every" nth-child.

Examples:

$$('#myDiv:nth-child(2n)'); //Returns every even child.

$$('#myDiv:nth-child(n)'); //Returns all children.

$$('#myDiv:nth-child(2n+1)') //Returns every odd child.

$$('#myDiv:nth-child(4n+3)') //Returns Elements 3, 7, 11, 15, etc.

Every Odd Child:

':nth-child(odd)'

Every Even Child:

':nth-child(even)'

Only Child:

':nth-child(only)'

First Child:

'nth-child(first)'

Last Child:

'nth-child(last)'

Note:

This selector respects the w3c specifications, so it has 1 as its first child, not 0. Therefore nth-child(odd) will actually select the even children, if you think in zero-based indexes.

Selector: even {#Selector:even}

Matches every even child.

Usage:

':even'

Example:

$$('td:even');

Note:

This selector is not part of the w3c specification, therefore its index starts at 0. This selector is highly recommended over nth-child(even), as this will return the real even children.

Selector: odd {#Selector:odd}

Matches every odd child.

Usage:

':odd'

Example:

$$('td:odd');

Note:

This selector is not part of the w3c specification, therefore its index starts at 0. This selector is highly recommended over nth-child(odd), as this will return the real odd children.

Selector: first-child {#Selector:first-child}

Matches the first child.

Usage:

':first-child'

Example:

$$('td:first-child');

Selector: last-child {#Selector:last-child}

Matches the last child.

Usage:

':last-child'

Example:

$$('td:last-child');

Selector: only-child {#Selector:only-child}

Matches an only child of its parent Element.

Usage:

':only-child'

Example:

$$('td:only-child');