Scroll Slowly to See Responsive Activation
This demo uses scrollThreshold: 2 - a very low threshold
that activates the natural scroll-in effect with minimal scroll speed.
Even gentle scrolling will trigger the header to appear from above the
viewport.
💡 Try this: Scroll down normally, then scroll up very slowly. Notice how the header appears from above even with gentle scrolling motions.
Perfect for: Responsive interfaces where you want maximum accessibility and easy header access with minimal effort.
🎯 How Low Threshold Works
// Low threshold configuration
naturalStickyTop(header, {
scrollThreshold: 2,
snapEagerness: 1
});
// This means:
// - Header activates when upward scroll speed ≥ 2px per scroll event
// - Very responsive to user input
// - Great for accessibility and ease of use
// - Minimal scroll effort requiredThe scrollThreshold parameter controls when the natural scroll-in effect activates. With a low threshold like 2, the header will position itself above the viewport and scroll into view naturally even with gentle upward scrolling.
Keep scrolling to understand the behavior patterns...
🔍 Implementation Details
Here's what happens with scrollThreshold: 2:
- ✅ Activates on slow, gentle scroll motions
- ✅ Excellent accessibility for users with limited mobility
- ✅ Works well with trackpad scroll gestures
- ✅ Responsive to precise scroll wheel movements
- ✅ Great for desktop users who prefer subtle interactions
📊 Scroll Speed Analysis
Low threshold values work by measuring the pixel difference between scroll positions. When you scroll up and the speed is ≥2 pixels per scroll event, the header moves above the viewport to naturally scroll back into view.
⚡ Performance note: Low thresholds are more responsive but may activate more frequently. This is usually desirable for accessibility and user experience.
🎨 User Experience Characteristics
Low threshold creates a more responsive, accessible experience:
- Gentle Activation: Header appears with minimal scroll effort
- Accessibility: Works well for users with motor impairments
- Desktop Friendly: Responds to precise mouse wheel movements
- Predictable: Users can easily trigger header appearance
- Forgiving: Small scroll movements still activate the effect
Try different scrolling patterns: gentle mouse wheel movements, trackpad gestures, and keyboard navigation. Notice how the header responds consistently to even small upward scroll motions.
This low threshold configuration is ideal for content-heavy sites, documentation, blogs, or any interface where easy header access is important for navigation and user experience.
The beauty of the natural approach is that it feels intuitive regardless of the threshold - the header movement always matches your scroll speed and direction perfectly.