Existence [] Attribute Selector
Matches the attribute, whatever its value.
Syntax
HTML [att] { sRules } Scripting N/A
Possible Values
att Must be either an Identifier or a String. sRules String that specifies one or more Cascading Style Sheets (CSS) attribute/value pairs.
Remarks
This selector is available as of Internet Explorer 7.
Attribute selectors are enabled only in standards-compliant mode (strict !DOCTYPE).
Attributes are case-sensitive.
Example
The following style rule selects elements that use the "special" attribute.
<style> .test { display:none; } [special] { display:block; } </style> <div class="test" special>Test for [] (Existence) succeeded.</div>
Standards Information
This selector is defined in Cascading Style Sheets (CSS), Level 3 (CSS3).
See Also
Class Selector, Equality [=] Attribute Selector, Hyphen [|=] Attribute Selector, ID Selector, Prefix [^=] Attribute Selector, Substring [*=] Attribute Selector, Suffix [$=] Attribute Selector, Type Selector, Universal (*) Selector, Whitespace [~=] Attribute Selector