What happens to event handler functions when multiple events are triggered?

When multiple events are triggered, the event handler functions are indeed placed in a queue for execution. This means that each time an event occurs, its corresponding handler is added to an event queue where they are stored until the JavaScript runtime is ready to execute them. This queuing system ensures that events are processed in the order they were received, allowing for organized handling of events without overlap or simultaneous execution, as JavaScript operates on a single-threaded model.

Once the JavaScript call stack is clear, the event loop takes the handlers from the event queue and executes them one by one. This mechanism helps to maintain responsiveness in web applications, as it ensures that while one handler is being executed, others are waiting their turn rather than trying to run all at once, which could lead to performance issues.

This behavior is crucial to understanding how asynchronous operations work in JavaScript and influences how developers design event-driven applications, ensuring that events are handled predictably and efficiently.