This page demonstrates different scenarios for event listeners, including localStorage proxy testing, scrolling, `this` context, and listener replacement.
Tests various methods of adding event listeners to buttons:
Tests adding multiple listeners to a button and dynamically removing one after a delay.
Click the button to update localStorage and observe the detected changes below.
Scroll within this window to trigger the scroll event. This window has a fixed height of 500px.
Scroll down to test the scroll event listener.
Keep scrolling to trigger more events.
This is an example of an isolated scrollable window.
Scroll more...
And more...
The content continues indefinitely...
Demonstrates the behavior of this in various scenarios:
Test what happens when event listeners are replaced without being explicitly removed.