jquery - Multiple Selector like statement -

i know multiple selector does

$( "p , #test" )

it gives combined results of specified selectors , can find documentation it.

but found piece of syntax somewhere , dont know how called , cant find way explain it. can tell me name , can find documentaion

$( "p" , "#test" )

it seems p elements within element id=test

the $ selector's second parameter context.

a dom element, document, or jquery use context. accepts string containing css selector used match set of elements.

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