YpsilonEventHandler Example

Passive Support: Checking...

📏 Scroll Metrics:
Window: 0px / 0px max (total: 0px, visible: 0px)
Scroll Div: 0px / 0px max (total: 0px, visible: 300px)

ACTIVE

🎯 Custom Handlers: Each button uses a different click handler function
💡 Input is debounced (300ms) - handler only fires after you stop typing
💡 Scroll events are throttled (100ms div, 250ms window) - smooth performance
💡 All scroll events automatically use passive listeners
🧪 Test destroy: Click "Destroy Handler" then try clicking/typing/scrolling!

Events will appear here...

Scroll Test (Passive Listeners)

Scroll in the area below to test passive scroll events:

Scrollable Content

This scroll area demonstrates passive event listeners.

When you scroll here, the event will be handled with passive:true automatically.

This improves performance by telling the browser that preventDefault() won't be called.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore.

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia.

Keep scrolling to see more content...

The scroll events are being logged to the output area above.

Notice how smooth the scrolling is with passive listeners!

This is the power of automatic passive listener detection.

YpsilonEventHandler handles this optimization automatically.

No manual configuration needed!

You're near the bottom now.

Final paragraph of scrollable content.

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Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet. Lorem ipsum dolor sit amet, consetetur sadipscing elitr, sed diam nonumy eirmod tempor invidunt ut labore et dolore magna aliquyam erat, sed diam voluptua. At vero eos et accusam et justo duo dolores et ea rebum. Stet clita kasd gubergren, no sea takimata sanctus est Lorem ipsum dolor sit amet.

Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi. Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat.

Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat. Duis autem vel eum iriure dolor in hendrerit in vulputate velit esse molestie consequat, vel illum dolore eu feugiat nulla facilisis at vero eros et accumsan et iusto odio dignissim qui blandit praesent luptatum zzril delenit augue duis dolore te feugait nulla facilisi.

Nam liber tempor cum soluta nobis eleifend option congue nihil imperdiet doming id quod mazim placerat facer possim assum. Lorem ipsum dolor sit amet, consectetuer adipiscing elit, sed diam nonummy nibh euismod tincidunt ut laoreet dolore magna aliquam erat volutpat. Ut wisi enim ad minim veniam, quis nostrud exerci tation ullamcorper suscipit lobortis nisl ut aliquip ex ea commodo consequat.

Scroll Test (No Throttling)

Scroll in the area below to test unthrottled scroll events:

Unthrottled Scrollable Content

This scroll area demonstrates scroll events without throttling.

When you scroll here, every scroll event will be handled immediately.

Compare this with the throttled scroll area above to see the difference.

Lorem ipsum dolor sit amet, consectetur adipiscing elit.

Sed do eiusmod tempor incididunt ut labore et dolore magna aliqua.

Ut enim ad minim veniam, quis nostrud exercitation ullamco laboris.

Duis aute irure dolor in reprehenderit in voluptate velit esse cillum dolore.

Excepteur sint occaecat cupidatat non proident, sunt in culpa qui officia.

Keep scrolling to see more content...

The scroll events are being logged to the output area above.

Notice how many more events are fired without throttling!

This demonstrates the importance of throttling for performance.

YpsilonEventHandler handles both throttled and unthrottled events.

Choose the right approach based on your use case!

You're near the bottom now.

Final paragraph of unthrottled scrollable content.