08-data-types

Lesson 08: Data types

JavaScript has 7 primitives + Object.

What you'll learn

• primitives: string, number, bigint, boolean, undefined, null, symbol
• everything else is an object (arrays, functions, dates...)
• typeof value returns the type as a string
• primitives are immutable and copied by value; objects are by reference

Example

See examples/.

Exercise

Write describe(value) returning a friendly type name.