There are five primitive data types in JavaScript:

Everything that is not a primitive is an object

The number data type can store positive and negative integers or floats, hexadecimal numbers, octal numbers, exponents, and the special numbers NaN, Infinity, and –Infinity

The string data type contains characters in quotes

The only values of the boolean data type are true and false

The only value of the null data type is the value null

The only value of the undefined data type is the value undefined

All values become true when converted to a boolean, with the exception of the six falsy values: