How to write speedy loops in JavaScript

And if you still think that the Google Chrome's JavaScript Engine (V8, WebKit) is faster than the old good "Gecko" from Mozilla Firefox, just check the link below:

HERE IS THE TEST (nothing dangerous)

Use pure JavaScript instead of frameworks and wrappers

I hate frameworks and wrappers of any kind, because of... You must understand that any framework causes performance leaks.

Here is just one more brilliant example.