Rule Definition
Avoid Universal Selectors because element selections that could be matched anywhere in the document can be very slow.
Violation Code Sample
$('div.container > *'); // SLOW
or
$( ":radio" ); // Implied universal selection.
or
$( "*:radio" ); // Implied universal selection.
Fixed Code Sample
$('div.container').children(); // BETTER
or
$( "input:radio" ); // Much better.
Reference
http://learn.jquery.com/performance/optimize-selectors/
Related Technologies
HTML5
Technical Criterion
CWE-1050 - Excessive Platform Resource Consumption within a Loop
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