jQuery doesn't cache elements for you. If you've made a selection that you might need to make again, you should save the selection in a variable rather than making the selection repeatedly.
With the default threshold of 2
$( "p" ).hide(); $( "p" ).show(); // Noncompliant
var paragraph = $( "p" ); paragraph.hide(); paragraph.show();
Stored selections are not updated when the DOM changes. Since variables may need to updated this rule ignores selections that are repeated during an assignment.
var paragraph = $("p");
// ...
paragraph = $("p");