.has() methodThe .has() method in jQuery is used to filter the set of matched elements, keeping only that have a descendant that matches the selector or DOM element.
.has() method Syntax.has(selector) .has(contained)
selector is an expression and contained is a DOM element to match elements against.
.has(selector)Highlight the item that have a class selected
$('li').has('.selected').css('background','cyan');
.has(contained)Add a red background for the item that has a <ul> among its descendants.
$( "li" ).has( "ul" ).css( "background-color", "red" );
