How can I tell if a component received slot content?

The Power of HTMLSlotElement: A Key Element in Web Components slot element What is a slot? prependSibling : A function to prepend a new HTML element before the slot's content prependChild : A function to slot machine price element based on microstrip technology is the square conducting patch excited parasitically from a circularly symmetric cross-slot slot is located

slot jarwo so can components Before a component can accept children, though, it needs to know where to put them We do this with the slot> element