JS: Primitive Value

Primitive Value

A primitive value is a value whose Type is a primitive type.

The following values are Primitive Values.

• any Number (includes NaN and Infinity)
• any String
• any Symbol
• undefined
• null
• true, false
• 3n

Primitive Value Object Wrapper

Most primitive type have corresponding object of object type.

• JS: String (class)
• JS: Number (class)
• JS: BigInt (class)
• JS: Boolean (class)
• JS: Symbol (class)

The object is used as primitive value wrapper. This allows you to call methods on them, such as "abc".length.

You can create number, string, boolean, objects yourself. For example:

• JS: String Constructor
• JS: Number Constructor
• JS: Boolean Constructor

Convert Primitive Value to Object

• JS: Object Constructor