Types and Converting Between Them

Tell numbers, strings and booleans apart with typeof, turn text into numbers and back with Number() and String(), and know why '5' + 3 is '53' and where NaN comes from.

Updated

Cheat sheet: Types and Converting Between Them
Category
JavaScript
Level
Apprentice
Tags
JavaScript, JavaScript Data Types, NaN, Primitive Value, Type Coercion, typeof Operator