Existence attribute selector
Expression Studio 4.0
Matches the property, whatever its value.
Syntax
[attr] { sRules }
Possible values
|
attr |
Either an identifier or a string. |
|
sRules |
A string that specifies one or more cascading style sheet property/value pairs. |
Remarks
Property 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 property:
<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) 
.
