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How to Capture Scroll Events on iPhone/iPad: Why It\'s Different and How to Do It Right
How to Capture Scroll Events on iPhone/iPad: Why It\'s Different and How to Do It Right
Oct 31, 2024 am 02:06 AM
Troubleshooting Scroll Event Capture on iPhone/iPad
Capturing scroll events on iOS devices can be challenging compared to desktop browsers. This article addresses the issue, explaining the unique behavior of scrolling on iOS and providing solutions for event handling.
iOS Scroll Event Behavior
Unlike web browsers on PCs, iPhone and iPad devices capture scroll events differently. One-finger panning and two-finger scrolling only trigger scroll events after the user stops the motion, when the page redraws. This behavior contrasts with the immediate event triggering on desktop browsers.
Event Handler Installation
Despite the unique event behavior, common methods for attaching scroll event handlers still work on iOS devices:
- window.addEventListener('scroll', ...)
- $(window).scroll(...)
- window.onscroll = ...
Example:
<code class="javascript">window.addEventListener('scroll', function() {
console.log('Scrolled');
});</code>
Additional Information
For further reference, you can consult Apple's developer documentation on [Handling Events in Safari Web Content](https://developer.apple.com/library/content/documentation/AppleApplications/Reference/SafariWebContent/HandlingEvents/HandlingEvents.html).
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