this second param (radix) of parseInt method

Question

I found a snippet using parseInt; it is used to get the window height.

This is the code:

parseInt($(window).height(), 20);

I am confused about why this uses 20 as the second parameter. Why not 10?

Answer 1

Either:

• Someone really wants to work in Base 20
• Someone pressed the key next to 1 by accident

You would need to ask the person who wrote the code. We can't know for sure without a lot more context.