Use requestAnimationFrame to know the FPS.
Browsers that have been tested
- chrome 93 passed
- firefox 90 failed
- edge 92 passed
- safari 14 passed
I checked with a 144hz monitor, Firefox does not seem to be able to use more than 60FPS.
- The number of requestAnimationFrame calls per second depends on the monitor's refresh rate setting
- When the tab of this page are hidden (background), will be called less of requestAnimationFrame for improve performance and reduce battery consumption.
(max 0 fps)