What happens when multiple custom events are dispatched simultaneously?
for (let i = 0; i < 1000; i++) {
const event = new CustomEvent(`event${i}`, {
detail: { index: i }
});
document.dispatchEvent(event);
}
When multiple custom events are dispatched simultaneously:
1. Events are added to the browser's event queue
2. They are processed synchronously in the order they were dispatched
3. Each event's handlers are executed completely before moving to the next event
4. The JavaScript event loop ensures orderly processing
This sequential processing ensures:
- Predictable event handling order
- No race conditions between event handlers
- Consistent state during event processing
- Better debugging capabilities