Rule Definition
Using [type=xxx] is far faster because it can take advantage of the DOM querySelectorAll method in modern browsers.
The check will be done on the following selectors
:checkbox, :file, :image, :password, :radio, :reset, :text
Remediation
Use "type=" notation instead of ":".
Violation Code Sample
var input = $( "form input:radio" ); // Noncompliant
var input = $( "form :radio" ); // Noncompliant
Fixed Code Sample
var input = $( "form input[type=radio]" ); // Compliant
Reference
http://learn.jquery.com/performance/optimize-selectors/
CISQ OMG
Related Technologies
HTML5
Technical Criterion
CWE-1050 - Excessive Platform Resource Consumption within a Loop
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