Speed-test for javascript code?

Question

JavaScript

Are there ready-made solutions for testing the speed of execution of a particular javascript code, identifying problem areas, etc.? If so, share the links, otherwise I could not find anything in Google.

Answer 1

In Firebug, chrome out of the box, in chrome with console activation (SpeedTracer), DynaTrace (IE \ FF)
There is also a product with the original name - JavaScript Performance Validator from a reputable (for me) company. Never reach his hands

Answer 2

Some JS debugging tools are available in Firebug. See if it suits you.
firebug.ru/js.html

Answer 3

Similarly, there is profiling in the built-in debugger in Chrome.

Answer 4

I think jsperf.com/ will help.