jQuery Function
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jQuery Object Accessors
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Function
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Returns
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Function
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Returns
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$( expression, context )
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jQuery
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each( callback )
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jQuery
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This function accepts a string containing a CSS selector which is then used to match a set of elements.
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Execute a function within the context of every matched element.
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$( html, ownerDocument )
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jQuery
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size( )
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Number
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Create DOM elements on-the-fly from the provided String of raw HTML.
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The number of elements in the jQuery object.
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$( elements )
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jQuery
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length
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Number
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Wrap jQuery functionality around a single or multiple DOM Element(s).
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The number of elements in the jQuery object.
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$( callback )
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jQuery
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selector
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String
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A shorthand for $(document).ready().
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New in jQuery 1.3 A selector representing selector originally passed to jQuery().
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Data
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context
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Element
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data(name)
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Any
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New in jQuery 1.3 The DOM node context originally passed to jQuery() (if none was passed then context will be equal to the document).
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Returns value at named data store for the element, as set by data(name, value).
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eq( position )
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jQuery
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data(name, value)
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jQuery
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Reduce the set of matched elements to a single element.
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Stores the value in the named spot.
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get( )
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Array
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removeData(name)
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jQuery
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Access all matched DOM elements.
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Removes named data store from an element.
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get( index )
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Element
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queue(name)
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Array(Function)
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Access a single matched DOM element at a specified index in the matched set.
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Returns a reference to the first element's queue (which is an array of functions).
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index( subject )
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Number
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queue(name, callback)
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jQuery
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Searches every matched element for the object and returns the index of the element, if found, starting with zero. If a jQuery object is passed, only the first element is checked.
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Adds a new function, to be executed, onto the end of the queue of all matched elements.
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Plugins
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queue(name, queue)
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jQuery
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jQuery.fn.extend( object )
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jQuery
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Replaces the queue of all matched element with this new queue (the array of functions).
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jQuery.extend( object )
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jQuery
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dequeue(name)
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jQuery
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Interoperability
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Removes a queued function from the front of the queue and executes it.
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jQuery.noConflict( )
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jQuery
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Plugins
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Run this function to give control of the $ variable back to whichever library first implemented it.
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jQuery.fn.extend( object )
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jQuery
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jQuery.noConflict( extreme )
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jQuery
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Extends the jQuery element set to provide new methods (used to make a typical jQuery plugin).
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Revert control of both the $ and jQuery variables to their original owners. Use with discretion.
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jQuery.extend( object )
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jQuery
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Extends the jQuery object itself.
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Basics
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Hierarchy
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Function
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Returns
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Function
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Returns
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#id
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Array
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ancestor descendant
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Array
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Matches a single element with the given id attribute.
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Matches all descendant elements specified by "descendant" of elements specified by "ancestor".
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element
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Array
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parent > child
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Array
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Matches all elements with the given name.
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Matches all child elements specified by "child" of elements specified by "parent".
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.class
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Array
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prev + next
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Array
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Matches all elements with the given class.
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Matches all next elements specified by "next" that are next to elements specified by "prev".
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.class.class
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Array
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prev ~ siblings
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Array
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Matches all elements with the given classes.
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Matches all sibling elements after the "prev" element that match the filtering "siblings" selector.
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*
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Array
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Content Filters
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Matches all elements.
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:contains(text)
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Array
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selector1, selector2, selectorN
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Array
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Matches elements which contain the given text.
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Matches the combined results of all the specified selectors.
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:empty
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Array
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Basic Filters
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Matches all elements that have no children (including text nodes).
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:first
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Array
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:has(selector)
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Array
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Matches the first selected element.
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Matches elements which contain at least one element that matches the specified selector.
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:last
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Array
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:parent
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Array
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Matches the last selected element.
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Matches all elements that are parents - they have child elements, including text.
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:not(selector)
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Array
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Visibility Filters
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Filters out all elements matching the given selector.
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:hidden
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Array
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:even
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Array
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Matches all elements that are hidden.
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Matches even elements, zero-indexed. See also odd
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:visible
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Array
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:odd
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Array
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Matches all elements that are visible.
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Matches odd elements, zero-indexed. See also even.
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Attribute Filters
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:eq(index)
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Array
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Note: In jQuery 1.3 [@attr] style selectors were removed (they were previously deprecated in jQuery 1.2). Simply remove the '@' symbol from your selectors in order to make them work again.
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Matches a single element by its index.
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[attribute]
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Array
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:gt(index)
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Array
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Matches elements that have the specified attribute.
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Matches all elements with an index above the given one.
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[attribute=value]
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Array
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:lt(index)
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Array
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Matches elements that have the specified attribute with a certain value.
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Matches all elements with an index below the given one.
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[attribute!=value]
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Array
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:header
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Array
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Matches elements that either don't have the specified attribute or do have the specified attribute but not with a certain value.
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Matches all elements that are headers, like h1, h2, h3 and so on.
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[attribute^=value]
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Array
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:animated
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Array
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Matches elements that have the specified attribute and it starts with a certain value.
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Matches all elements that are currently being animated.
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[attribute$=value]
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Array
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Child Filters
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Matches elements that have the specified attribute and it ends with a certain value.
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:nth-child(index/even/odd/equation)
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Array
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[attribute*=value]
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Array
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Matches all elements that are the nth-child of their parent or that are the parent's even or odd children.
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Matches elements that have the specified attribute and it contains a certain value.
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:first-child
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Array
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[attributeFilter1]
[attributeFilter2]
[attributeFilterN]
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Array
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Matches all elements that are the first child of their parent.
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Matches elements that match all of the specified attribute filters.
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:last-child
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Array
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Matches all elements that are the last child of their parent.
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:only-child
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Array
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Matches all elements that are the only child of their parent.
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