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<!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01//EN">
<html lang=en>
<head>
<title>Selectors Level 4</title>
<link href="../css-module/default.css" rel=stylesheet type="text/css">
<style type="text/css">
.tprofile td, th { vertical-align: baseline; padding: 0 0.5em; }
.tprofile th { text-align: right; }
</style>
<link href="http://www.w3.org/StyleSheets/TR/W3C-ED.css" rel=stylesheet
type="text/css">
<body>
<div class=head> <!--begin-logo-->
<p><a href="http://www.w3.org/"><img alt=W3C height=48
src="http://www.w3.org/Icons/w3c_home" width=72></a> <!--end-logo-->
<h1 id=title>Selectors Level 4</h1>
<h2 class="no-num no-toc" id=longstatus-date>Editor's Draft 15 November
2011</h2>
<dl>
<dt>This version: <!--
<dd><a href="http://www.w3.org/TR/2011/ED-selectors4-20111115/">
http://www.w3.org/TR/2011/WD-selectors4-20111115/</a>
<dt>Editor's draft:
-->
<dd><a href="http://dev.w3.org/csswg/selectors4/">
http://dev.w3.org/csswg/selectors4/</a>
<dt>Latest version of Selectors Level 4:
<dd><a href="http://www.w3.org/TR/selectors4/">
http://www.w3.org/TR/selectors4/</a>
<dt>Latest Selectors specification:
<dd><a href="http://www.w3.org/TR/selectors/">
http://www.w3.org/TR/selectors/</a>
<dt>Previous version:
<dd><a href="http://www.w3.org/TR/2011/WD-selectors4-20110929/">
http://www.w3.org/TR/2011/WD-selectors4-20110929/</a>
<dt>Editors:
<dd class=vcard><a class="url fn"
href="http://fantasai.inkedblade.net/contact">Elika J. Etemad</a>
(Mozilla)
<dt>Previous Editors:
<dd class=vcard><a class="url fn" href="http://www.tantek.com/"
lang=tr>Tantek Çelik</a> (Microsoft)
<dd class=vcard><span class=fn>Daniel Glazman</span> (Disruptive
Innovations SARL)
<dd class=vcard><span class=fn>Ian Hickson</span> (Opera Softare ASA)
<dd class=vcard><span class=fn>Peter Linss</span> (Netscape/AOL)
<dd class=vcard><span class=fn>John Williams</span> (Quark, Inc.)
</dl>
<!--begin-copyright-->
<p class=copyright><a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Copyright"
rel=license>Copyright</a> © 2011 <a
href="http://www.w3.org/"><acronym
title="World Wide Web Consortium">W3C</acronym></a><sup>®</sup> (<a
href="http://www.csail.mit.edu/"><acronym
title="Massachusetts Institute of Technology">MIT</acronym></a>, <a
href="http://www.ercim.eu/"><acronym
title="European Research Consortium for Informatics and Mathematics">ERCIM</acronym></a>,
<a href="http://www.keio.ac.jp/">Keio</a>), All Rights Reserved. W3C <a
href="http://www.w3.org/Consortium/Legal/ipr-notice#Legal_Disclaimer">liability</a>,
<a
href="http://www.w3.org/Consortium/Legal/ipr-notice#W3C_Trademarks">trademark</a>
and <a
href="http://www.w3.org/Consortium/Legal/copyright-documents">document
use</a> rules apply.</p>
<!--end-copyright-->
<hr title="Separator for header">
</div>
<h2 class="no-num no-toc" id=abstract> Abstract</h2>
<p><em>Selectors</em> are patterns that match against elements in a tree,
and as such form one of several technologies that can be used to select
nodes in an XML document. Selectors have been optimized for use with HTML
and XML, and are designed to be usable in performance-critical code. They
are a core component of <abbr title="Cascading Style Sheets">CSS</abbr>
(Cascading Style Sheets), which uses Selectors to bind style properties to
elements in the document.
<p>Selectors Level 4 describes the selectors that already exist in <a
href="#SELECT" rel=biblioentry>[SELECT]<!--{{!SELECT}}--></a>, and further
introduces new selectors for CSS and other languages that may need them.
<h2 class="no-num no-toc" id=status>Status of this Document</h2>
<!--begin-status-->
<p>This is a public copy of the editors' draft. It is provided for
discussion only and may change at any moment. Its publication here does
not imply endorsement of its contents by W3C. Don't cite this document
other than as work in progress.
<p>The (<a
href="http://lists.w3.org/Archives/Public/www-style/">archived</a>) public
mailing list <a
href="mailto:www-style@w3.org?Subject=%5Bselectors4%5D%20PUT%20SUBJECT%20HERE">
www-style@w3.org</a> (see <a
href="http://www.w3.org/Mail/Request">instructions</a>) is preferred for
discussion of this specification. When sending e-mail, please put the text
“selectors4” in the subject, preferably like this:
“[<!---->selectors4<!---->] <em>…summary of
comment…</em>”
<p>This document was produced by the <a href="/Style/CSS/members">CSS
Working Group</a> (part of the <a href="/Style/">Style Activity</a>).
<p>This document was produced by a group operating under the <a
href="/Consortium/Patent-Policy-20040205/">5 February 2004 W3C Patent
Policy</a>. W3C maintains a <a href="/2004/01/pp-impl/32061/status"
rel=disclosure>public list of any patent disclosures</a> made in
connection with the deliverables of the group; that page also includes
instructions for disclosing a patent. An individual who has actual
knowledge of a patent which the individual believes contains <a
href="/Consortium/Patent-Policy-20040205/#def-essential">Essential
Claim(s)</a> must disclose the information in accordance with <a
href="/Consortium/Patent-Policy-20040205/#sec-Disclosure">section 6 of the
W3C Patent Policy</a>.</p>
<!--end-status-->
<p><strong>This module is an early-stage Working Draft. If you are looking
for a stable Selectors specification, use <a
href="http://www.w3.org/TR/css3-selectors/">Selectors 3</a>.</strong> Read
the <a href="http://www.w3.org/TR/CSS/">CSS Snapshot</a> for an overview
of the CSS development process. See the <a href="#overview">Selectors
Overview</a> for a summary of additions to level 3.
<p>This is the first public Working Draft of this new specification.
<h2 class="no-num no-toc" id=contents>Table of Contents</h2>
<!--begin-toc-->
<ul class=toc>
<li><a href="#context"><span class=secno>1. </span> Introduction</a>
<ul class=toc>
<li><a href="#placement"><span class=secno>1.1. </span>Module
Interactions</a>
</ul>
<li><a href="#overview"><span class=secno>2. </span> Selectors
Overview</a>
<li><a href="#syntax"><span class=secno>3. </span> Selector Syntax and
Structure</a>
<ul class=toc>
<li><a href="#structure"><span class=secno>3.1. </span> Structure and
Terminology</a>
<li><a href="#subject"><span class=secno>3.2. </span> Determining the
Subject of a Selector</a>
<li><a href="#pseudo-classes"><span class=secno>3.3. </span>
Pseudo-classes</a>
<li><a href="#pseudo-elements"><span class=secno>3.4.
</span>Pseudo-elements</a>
<li><a href="#case-sensitive"><span class=secno>3.5. </span> Characters
and case sensitivity</a>
<li><a href="#namespaces"><span class=secno>3.6. </span> Namespaces</a>
<li><a href="#invalid"><span class=secno>3.7. </span> Invalid Selectors
and Error Handling</a>
</ul>
<li><a href="#logical-combination"><span class=secno>4. </span> Logical
Combinations</a>
<ul class=toc>
<li><a href="#grouping"><span class=secno>4.1. </span> Selector
Lists</a>
<li><a href="#matches"><span class=secno>4.2. </span> The Matches-Any
Pseudo-class: ‘<code class=css>:matches()</code>’</a>
<li><a href="#negation"><span class=secno>4.3. </span> The Negation
Pseudo-class: ‘<code class=css>:not()</code>’</a>
</ul>
<li><a href="#elemental-selectors"><span class=secno>5. </span> Elemental
selectors</a>
<ul class=toc>
<li><a href="#type-selectors"><span class=secno>5.1. </span> Type
selector</a>
<ul class=toc>
<li><a href="#typenmsp"><span class=secno>5.1.1. </span> Type
selectors and namespaces</a>
</ul>
<li><a href="#universal-selector"><span class=secno>5.2. </span>
Universal selector </a>
<ul class=toc>
<li><a href="#univnmsp"><span class=secno>5.2.1. </span> Universal
selector and namespaces</a>
</ul>
</ul>
<li><a href="#attribute-selectors"><span class=secno>6. </span> Attribute
selectors</a>
<ul class=toc>
<li><a href="#attribute-representation"><span class=secno>6.1. </span>
Attribute presence and value selectors</a>
<li><a href="#attribute-substrings"><span class=secno>6.2. </span>
Substring matching attribute selectors</a>
<li><a href="#attribute-case"><span class=secno>6.3. </span>
Case-sensitivity</a>
<li><a href="#attrnmsp"><span class=secno>6.4. </span> Attribute
selectors and namespaces</a>
<li><a href="#def-values"><span class=secno>6.5. </span> Default
attribute values in DTDs</a>
<li><a href="#class-html"><span class=secno>6.6. </span> Class
selectors</a>
<li><a href="#id-selectors"><span class=secno>6.7. </span> ID
selectors</a><
A0B3
/div>
</ul>
<li><a href="#location"><span class=secno>7. </span> Location
Pseudo-classes</a>
<ul class=toc>
<li><a href="#any-link-pseudo"><span class=secno>7.1. </span> The
hyperlink pseudo-class: ‘<code
class=css>:any-link</code>’</a>
<li><a href="#link"><span class=secno>7.2. </span> The link history
pseudo-classes: ‘<code class=css>:link</code>’ and
‘<code class=css>:visited</code>’</a>
<li><a href="#local-pseudo"><span class=secno>7.3. </span> The local
link pseudo-class ‘<code class=css>:local-link</code>’</a>
<li><a href="#target-pseudo"><span class=secno>7.4. </span> The target
pseudo-class ‘<code class=css>:target</code>’</a>
<li><a href="#scope-pseudo"><span class=secno>7.5. </span> The
contextual reference element pseudo-class ‘<code
class=css>:scope</code>’</a>
</ul>
<li><a href="#useraction-pseudos"><span class=secno>8. </span> User Action
Pseudo-classes</a>
<ul class=toc>
<li><a href="#hover-pseudo"><span class=secno>8.1. </span> The pointer
hover pseudo-class ‘<code class=css>:hover</code>’</a>
<li><a href="#active-pseudo"><span class=secno>8.2. </span> The
activation pseudo-class ‘<code
class=css>:active</code>’</a>
<li><a href="#focus-pseudo"><span class=secno>8.3. </span> The input
focus pseudo-class ‘<code class=css>:focus</code>’</a>
</ul>
<li><a href="#time-pseudos"><span class=secno>9. </span> Time-dimensional
Pseudo-classes</a>
<ul class=toc>
<li><a href="#current-pseudo"><span class=secno>9.1. </span> The
current-element pseudo-class ‘<code
class=css>:current</code>’</a>
<li><a href="#past-pseudo"><span class=secno>9.2. </span> The
past-element pseudo-class ‘<code
class=css>:past</code>’</a>
<li><a href="#future-pseudo"><span class=secno>9.3. </span> The
future-element pseudo-class ‘<code
class=css>:future</code>’</a>
</ul>
<li><a href="#linguistic-pseudos"><span class=secno>10. </span> Linguistic
Pseudo-classes</a>
<ul class=toc>
<li><a href="#dir-pseudo"><span class=secno>10.1. </span> The
directionality pseudo-class ‘<code
class=css>:dir()</code>’</a>
<li><a href="#lang-pseudo"><span class=secno>10.2. </span> The language
pseudo-class ‘<code class=css>:lang()</code>’</a>
</ul>
<li><a href="#ui-states-pseudos"><span class=secno>11. </span> The UI
states pseudo-classes</a>
<ul class=toc>
<li><a href="#enableddisabled"><span class=secno>11.1. </span> The
‘<code class=css>:enabled</code>’ and ‘<code
class=css>:disabled</code>’ pseudo-classes</a>
<li><a href="#checked"><span class=secno>11.2. </span> The
selected-option pseudo-class ‘<code
class=css>:checked</code>’</a>
<li><a href="#indeterminate"><span class=secno>11.3. </span> The
indeterminate-value pseudo-class ‘<code
class=css>:indeterminate</code>’</a>
<li><a href="#default-pseudo"><span class=secno>11.4. </span> The
default option pseudo-class ‘<code
class=css>:default</code>’</a>
<li><a href="#validity-pseudos"><span class=secno>11.5. </span> The
validity pseudo-classes ‘<code class=css>:valid</code>’ and
‘<code class=css>:invalid</code>’</a>
<li><a href="#range-pseudos"><span class=secno>11.6. </span> The range
pseudo-classes ‘<code class=css>:in-range</code>’ and
‘<code class=css>:out-of-range</code>’</a>
<li><a href="#opt-pseudos"><span class=secno>11.7. </span> The
optionality pseudo-classes ‘<code
class=css>:required</code>’ and ‘<code
class=css>:optional</code>’</a>
<li><a href="#rw-pseudos"><span class=secno>11.8. </span> The mutability
pseudo-classes ‘<code class=css>:read-only</code>’ and
‘<code class=css>:read-write</code>’</a>
</ul>
<li><a href="#structural-pseudos"><span class=secno>12. </span>
Tree-Structural pseudo-classes</a>
<ul class=toc>
<li><a href="#root-pseudo"><span class=secno>12.1. </span> ‘<code
class=css>:root</code>’ pseudo-class</a>
<li><a href="#nth-child-pseudo"><span class=secno>12.2. </span>
‘<code class=css>:nth-child()</code>’ pseudo-class</a>
<li><a href="#nth-last-child-pseudo"><span class=secno>12.3. </span>
‘<code class=css>:nth-last-child()</code>’ pseudo-class</a>
<li><a href="#nth-of-type-pseudo"><span class=secno>12.4. </span>
‘<code class=css>:nth-of-type()</code>’ pseudo-class</a>
<li><a href="#nth-last-of-type-pseudo"><span class=secno>12.5. </span>
‘<code class=css>:nth-last-of-type()</code>’
pseudo-class</a>
<li><a href="#nth-match"><span class=secno>12.6. </span> ‘<code
class=css>:nth-match()</code>’ pseudo-class</a>
<li><a href="#nth-last-match"><span class=secno>12.7. </span>
‘<code class=css>:nth-last-match()</code>’ pseudo-class</a>
<li><a href="#first-child-pseudo"><span class=secno>12.8. </span>
‘<code class=css>:first-child</code>’ pseudo-class</a>
<li><a href="#last-child-pseudo"><span class=secno>12.9. </span>
‘<code class=css>:last-child</code>’ pseudo-class</a>
<li><a href="#first-of-type-pseudo"><span class=secno>12.10. </span>
‘<code class=css>:first-of-type</code>’ pseudo-class</a>
<li><a href="#last-of-type-pseudo"><span class=secno>12.11. </span>
‘<code class=css>:last-of-type</code>’ pseudo-class</a>
<li><a href="#only-child-pseudo"><span class=secno>12.12. </span>
‘<code class=css>:only-child</code>’ pseudo-class</a>
<li><a href="#only-of-type-pseudo"><span class=secno>12.13. </span>
‘<code class=css>:only-o
5DC1
f-type</code>’ pseudo-class</a>
<li><a href="#empty-pseudo"><span class=secno>12.14. </span>
‘<code class=css>:empty</code>’ pseudo-class</a>
</ul>
<li><a href="#table-pseudos"><span class=secno>13. </span> Grid-Structural
Selectors</a>
<ul class=toc>
<li><a href="#column-pseudo"><span class=secno>13.1. </span>
‘<code class=css>:column()</code>’ pseudo-class</a>
<li><a href="#nth-column-pseudo"><span class=secno>13.2. </span>
‘<code class=css>:nth-column()</code>’ pseudo-class</a>
<li><a href="#nth-last-column-pseudo"><span class=secno>13.3. </span>
‘<code class=css>:nth-last-column()</code>’
pseudo-class</a>
</ul>
<li><a href="#combinators"><span class=secno>14. </span> Combinators</a>
<ul class=toc>
<li><a href="#descendant-combinators"><span class=secno>14.1. </span>
Descendant combinator</a>
<li><a href="#child-combinators"><span class=secno>14.2. </span> Child
combinators</a>
<li><a href="#adjacent-sibling-combinators"><span class=secno>14.3.
</span> Adjacent sibling combinator</a>
<li><a href="#general-sibling-combinators"><span class=secno>14.4.
</span> General sibling combinator</a>
<li><a href="#idref-combinators"><span class=secno>14.5. </span>
Reference combinators</a>
</ul>
<li><a href="#specificity"><span class=secno>15. </span> Calculating a
selector's specificity</a>
<li><a href="#formal-syntax"><span class=secno>16. </span> Formal
Syntax</a>
<ul class=toc>
<li><a href="#grammar"><span class=secno>16.1. </span> Grammar</a>
<li><a href="#lex"><span class=secno>16.2. </span> Lexical scanner</a>
</ul>
<li><a href="#profiling"><span class=secno>17. </span> Profiles</a>
<ul class=toc>
<li><a href="#css-profiles"><span class=secno>17.1. </span> CSS
Profiles</a>
<li><a href="#stts-profile"><span class=secno>17.2. </span> STTS
Profiles</a>
</ul>
<li><a href="#conformance"><span class=secno>18. </span> Conformance</a>
<ul class=toc>
<li><a href="#conventions"><span class=secno>18.1. </span>Document
Conventions</a>
<li><a href="#conformance-classes"><span class=secno>18.2. </span>
Conformance Classes</a>
<li><a href="#partial"><span class=secno>18.3. </span> Partial
Implementations</a>
<li><a href="#experimental"><span class=secno>18.4. </span> Experimental
Implementations</a>
</ul>
<li><a href="#acknowledgements"><span class=secno>19. </span>
Acknowledgements</a>
<li><a href="#references"><span class=secno>20. </span> References</a>
<ul class=toc>
<li><a href="#normative-references"><span class=secno>20.1. </span>
Normative References</a>
<li><a href="#informative-references"><span class=secno>20.2. </span>
Informative References</a>
</ul>
</ul>
<!--end-toc-->
<h2 id=context><span class=secno>1. </span> Introduction</h2>
<p><em>This section is not normative.</em>
<p>Selectors define the following function for elements in a tree
structure:
<pre>expression ∗ element → boolean</pre>
<p>That is, given an element and a selector, this specification defines
whether that element matches the selector.
<p>These expressions can also be used, for instance, to select a set of
elements, or a single element from a set of elements, by evaluating the
expression across all the elements in a subtree. <abbr
title="Simple Tree Transformation Sheets">STTS</abbr> (Simple Tree
Transformation Sheets), a language for transforming XML trees, uses this
mechanism. <a href="#STTS3" rel=biblioentry>[STTS3]<!--{{STTS3}}--></a>
<p>Selectors Levels 1, 2, and 3 are defined as the subsets of selector
functionality defined in the <a
href="http://www.w3.org/TR/REC-CSS1">CSS1</a>, <a
href="http://www.w3.org/TR/CSS21/">CSS2.1</a>, and <a
href="http://www.w3.org/TR/css3-selectors/">Selectors Level 3</a>
specifications, respectively. This module defines Selectors Level 4.
<h3 id=placement><span class=secno>1.1. </span>Module Interactions</h3>
<p>This module replaces the definitions for, and extends the set of
selectors defined for CSS in <a href="#SELECT"
rel=biblioentry>[SELECT]<!--{{SELECT}}--></a> and <a href="#CSS21"
rel=biblioentry>[CSS21]<!--{{CSS21}}--></a>.
<p>Pseudo-element selectors, which define abstract elements in a rendering
tree, are not part of this specification: their generic syntax is
described here, but, due to their close integration with the rendering
model and irrelevance to other uses such as DOM queries, they will be
defined in other modules.
<h2 id=overview><span class=secno>2. </span> Selectors Overview</h2>
<p><em>This section is non-normative, as it merely summarizes the following
sections.</em>
<p>A Selector represents a structure. This structure can be used as a
condition (e.g. in a CSS rule) that determines which elements a selector
matches in the document tree, or as a flat description of the HTML or XML
fragment corresponding to that structure.
<p>Selectors may range from simple element names to rich contextual
representations.
<p>The following table summarizes the Selector syntax:
<table class=data><col class=pattern><col class=meaning><col
class=section><col class=level>
<thead>
<tr>
<th>Pattern
<th>Meaning
<th>Section
<th>Level
<tbody>
<tr>
<td><code>*</code>
<td>any element
<td><a href="#universal-selector">Universal selector</a>
<td>2
<tr>
<td><code>E</code>
<td>an element of type E
<td><a href="#type-selectors">Type selector</a>
<td>1
<tbody>
<tr>
<td><code>E:not(<var>s1</var>, <var>s2</var>)</code>
<td>an E element that does not match either compound selector
<var>s1</var> or compound selector <var>s2</var>
<td><a href="#negation">Negation pseudo-class</a>
<td>3/4
<tr>
<td><code>E:matches(<var>s1</var>, <var>s2</var>)</code>
<td>an E element that matches compound selector <var>s1</var> and/or
compound selector <var>s2</var>
<td><a href="#matches">Matches-any pseudo-class</a>
<td>4
<tbody>
<tr>
<td><code>E.warning</code>
<td>an E element belonging to the class <code>warning</code> (the
document language specifies how class is determined).
<td><a href="#class-html">Class selectors</a>
<td>1
<tr>
<td><code>E#myid</code>
<td>an E element with ID equal to <code>myid</code>.
<td><a href="#id-selectors">ID selectors</a>
<td>1
<tr>
<td><code>E[foo]</code>
<td>an E element with a <code>foo</code> attribute
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>2
<tr>
<td><code>E[foo="bar"]</code>
<td>an E element whose <code>foo</code> attribute value is exactly equal
to <code>bar</code>
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>2
<tr>
<td><code>E[foo="bar" i]</code>
<td>an E element whose <code>foo</code> attribute value is exactly equal
to any (ASCII-range) case-permutation of <code>bar</code>
<td><a href="#attribute-case">Attribute selectors: Case-sensitivity</a>
<td>4
<tr>
<td><code>E[foo~="bar"]</code>
<td>an E element whose <code>foo</code> attribute value is a list of
whitespace-separated values, one of which is exactly equal to
<code>bar</code>
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>2
<tr>
<td><code>E[foo^="bar"]</code>
<td>an E element whose <code>foo</code> attribute value begins exactly
with the string "bar"
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>3
<tr>
<td><code>E[foo$="bar"]</code>
<td>an E element whose <code>foo</code> attribute value ends exactly
with the string <code>bar</code>
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>3
<tr>
<td><code>E[foo*="bar"]</code>
<td>an E element whose <code>foo</code> attribute value contains the
substring <code>bar</code>
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>3
<tr>
<td><code>E[foo|="en"]</code>
<td>an E element whose <code>foo</code> attribute value is a
hyphen-separated list of values beginning with <code>en</code>
<td><a href="#attribute-selectors">Attribute selectors</a>
<td>2
<tbody>
<tr>
<td><code>E:dir(ltr)</code>
<td>an element of type E in with left-to-right directionality (the
document language specifies how directionality is determined)
<td><a href="#dir-pseudo">The :dir() pseudo-class</a>
<td>4
<tr>
<td><code>E:lang(fr, en)</code>
<td>an element of type E in either language "fr" or language "en" (the
document language specifies how language is determined)
<td><a href="#lang-pseudo">The :lang() pseudo-class</a>
<td>2/4
<tbody>
<tr>
<td><code>E:any-link</code>
<td>an E element being the source anchor of a hyperlink
<td><a href="#any-link-pseudo">The hyperlink pseudo-class</a>
<td>4
<tr>
<td><code>E:link</code>
<td>an E element being the source anchor of a hyperlink of which the
target is not yet visited
<td><a href="#link">The link history pseudo-classes</a>
<td>1
<tr>
<td><code>E:visited</code>
<td>an E element being the source anchor of a hyperlink of which the
target is already visited
<td><a href="#link">The link history pseudo-classes</a>
<td>1
<tr>
<td><code>E:local-link</code>
<td>an E element being the source anchor of a hyperlink of which the
target is the current document
<td><a href="#local-pseudo">The local link pseudo-class</a>
<td>4
<tr>
<td><code>E:local-link(0)</code>
<td>an E element being the source anchor of a hyperlink of which the
target is within the current domain
<td><a href="#local-pseudo">The local link pseudo-class</a>
<td>4
<tr>
<td><code>E:target</code>
<td>an E element being the target of the referring URI
<td><a href="#target-pseudo">The target pseudo-class</a>
<td>3
<tr>
<td><code>E:scope</code>
<td>an E element being a designated contextual reference element
<td><a href="#scope-pseudo">The scope pseudo-class</a>
<td>3
<tbody>
<tr>
<td><code>E:current</code>
<td>an E element that is currently presented in a time-dimensional
canvas
<td><a href="#time-pseudos">Time-dimensional Pseudo-classes</a>
<td>4
<tr>
<td><code>E:current(<var>s</var>)</code>
<td>an E element that is the deepest <code>:current</code> element that
matches selector <var>s</var>
<td><a href="#time-pseudos">Time-dimensional Pseudo-classes</a>
<td>4
<tr>
<td><code>E:past</code>
<td>an E element that is in the past in a time-dimensional canvas
<td><a href="#time-pseudos">Time-dimensional Pseudo-classes</a>
<td>4
<tr>
<td><code>E:future</code>
<td>an E element that is in the future in a time-dimensional canvas
<td><a href="#time-pseudos">Time-dimensional Pseudo-classes</a>
<td>4
<tbody>
<tr>
<td><code>E:active</code>
<td>an E element that is in an activated state
<td><a href="#useraction-pseudos">The user action pseudo-classes</a>
<td>1
<tr>
<td><code>E:hover</code>
<td>an E element that is under the cursor, or that has a descendant
under the cursor
<td><a href="#useraction-pseudos">The user action pseudo-classes</a>
<td>2
<tr>
<td><code>E:focus</code>
<td>an E element that has user input focus
<td><a href="#useraction-pseudos">The user action pseudo-classes</a>
<td>2
<tr>
<td><code>E:enabled<br>
E:disabled</code>
<td>a user interface element E that is enabled or disabled, respectively
<td><a href="#enableddisabled">The :enabled and :disabled
pseudo-classes</a>
<td>3
<tr>
<td><code>E:checked</code>
<td>a user interface element E that is checked/selected (for instance a
radio-button or checkbox)
<td><a href="#checked">The selected-option pseudo-class</a>
<td>3
<tr>
<td><code>E:indeterminate</code>
<td>a user interface element E that is in an indeterminate state
(neither checked nor unchecked)
<td><a href="#indeterminate">The indeterminate-value pseudo-class</a>
<td>4
<tr>
<td><code>E:default</code>
<td>a user interface element E that
<td><a href="#default-pseudo">The default option pseudo-class
:default</a>
<td>3-UI/4
<tr>
<td><code>E:in-range</code><br>
<code>E:out-of-range</code>
<td>a user interface element E that
<td><a href="#range-pseudos">The validity pseudo-classes</a>
<td>3-UI/4
<tr>
<td><code>E:required</code><br>
<code>E:optional</code>
<td>a user interface element E that
<td><a href="#opt-pseudos">The optionality pseudo-classes</a>
<td>3-UI/4
<tr>
<td><code>E:read-only</code><br>
<code>E:read-write</code>
<td>a user interface element E that
<td><a href="#rw-pseudos">The mutability pseudo-classes</a>
<td>3-UI/4
<tbody>
<tr>
<td><code>E:root</code>
<td>an E element, root of the document
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:empty</code>
<td>an E element that has no children (not even text nodes)
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:first-child</code>
<td>an E element, first child of its parent
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>2
<tr>
<td><code>E:nth-child(<var>n</var>)</code>
<td>an E element, the <var>n</var>-th child of its parent
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:last-child</code>
<td>an E element, last child of its parent
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:nth-last-child(<var>n</var>)</code>
<td>an E element, the <var>n</var>-th child of its parent, counting from
the last one
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:only-child</code>
<td>an E element, only child of its parent
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:first-of-type</code>
<td>an E element, first sibling of its type
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:nth-of-type(<var>n</var>)</code>
<td>an E element, the <var>n</var>-th sibling of its type
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3
<tr>
<td><code>E:last-of-type</code>
<td>an E element, last sibling of its type
<td><a href="#structural-pseudos">Structural pseudo-classes</a>
<td>3