Browser Compatibility & Platform Differences
How modern web engines handle input events, timer throttling, and Gamepad APIs.
Browser Input API Capabilities
| Feature | Chromium (Chrome/Edge/Brave) | Mozilla Firefox | Apple Safari (WebKit) |
|---|---|---|---|
| PointerRawUpdate API | Supported (High Precision) | Fallback to PointerMove | Fallback to PointerMove |
| Coalesced Events (getCoalescedEvents) | Fully Supported | Supported | Partial / Platform Dependent |
| Gamepad API & Vibration | Dual-Rumble Supported | Gamepad Supported | Limited Vibration |
| Wheel deltaMode Support | 0 (Pixel) & 1 (Line) | 0 (Pixel) & 1 (Line) | 0 (Pixel) by default |
Background Tab Throttling
All modern browsers clamp JavaScript timers (`setInterval` / `requestAnimationFrame`) to 1000ms or suspend execution entirely when a tab is in the background or minimized. Keep the MouseTesterPro.online window focused and active while performing diagnostic tests.
Mobile Device Limitations
Mobile browsers on smartphones and tablets simulate mouse events from touch gestures. Physical mouse wheel deltaModes and high-rate USB polling tests are designed for desktop operating systems (Windows, macOS, Linux, ChromeOS).