Typeof

Format: typeof x

Arguments: [any] x Any valid expression

Returns: (text) Text indicating the type of the data in x

Description: This operator evaluates x and then returns a text string from the table below indicating the type of data in x.

Returns Data Type

undefined null

boolean Boolean value true or false

number Any real or complex number

string Text string

object List or object

function Function pointer

Examples: typeof null = undefined

typeof true = boolean

typeof 5 = number

typeof "Hello World" = string

typeof 1..3 = object

typeof sqrt = function

See Also: dtype