What is the difference between parseInt() and Number()?

Question

How do parseInt() and Number() behave differently when converting strings to numbers?

Answer 1

If you are looking for performance then probably best results you'll get with bitwise right shift "10">>0. Also multiply ("10" * 1) or not not (~~"10"). All of them are much faster of Number and parseInt. They even have "feature" returning 0 for not number argument. Here are Performance tests.