How can I test the user's computer's processing power using Javascript?

Question

I made a pretty CPU intensive webpage with lots of CSS3 and Javascript. I want to use Javascript to test if the user\'s computer is capable of handling the scripts. I think

Answer 1

There are ways to assess the CPU or graphics capabilities of the host computer using javascript. For example, you could run a set of iterations using those operations and measure the time from beginning to end.

In general, it's not that useful to just try to measure a single CPU performance number as it's much more important to measure exactly what your critical operations are.

For example, if you're concerned with a certain type of graphics rendering, you can do a sample animation and see how many frames can be rendered in a particular time.