Get the descendants of each element in the current set of matched elements, filtered by a selector, jQuery object, or element.
Optional
Element to look for.
The found elements.
$('#fruits').find('li').length;//=> 3$('#fruits').find($('.apple')).length;//=> 1 Copy
$('#fruits').find('li').length;//=> 3$('#fruits').find($('.apple')).length;//=> 1
https://api.jquery.com/find/
Get the descendants of each element in the current set of matched elements, filtered by a selector, jQuery object, or element.