Variables hold a wide variety of information temporarily. The JavaScript data types that can be stored in a variable include: JavaScript variables can hold a few other kinds of data, but these are by ...

Whereas Java and several other programming languages have a wide and rich range of datatypes and collections types, JavaScript only has a small number of primitive datatypes (Boolean, Number, String, ...

Overview: Strong fundamentals in data types, scope and closures boost interview performance.Understanding promises and event loop behavior improves handling of ...