stats.js is a nifty little performance monitor:
This class provides a simple info box that will help you monitor your code performance.
– FPS Frames rendered in the last second. The higher the number the better.
– MS Milliseconds needed to render a frame. The lower the number the better.
– MB MBytes of allocated memory. (Run Chrome with –enable-precise-memory-info)
The FPS monitor looks like this:
