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JavaScript JavaScript and the DOM (Retiring) Responding to User Interaction Event Bubbling and Delegation

Is an event object always created after an event occurs on an element (mouseover, click)?

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1 Answer

Steven Parker
Steven Parker
231,272 Points

Funny question .. similar to "if no one is around to hear a tree falling in the forest, does it make any sound?" :wink:

It would probably depend on the specific JavaScript engine. But I would suspect that in the interest of efficiency, the event mechanisms (including event object creation) are bypassed when there are no listeners to process the event.