map

fun map(transform: (value: T) -> T): S(source)

Calls a defined callback function on each element of an array, and returns an array that contains the results.

callbackfn

A function that accepts up to three arguments. The map method calls the callbackfn function one time for each element in the array.

thisArg

An object to which the this keyword can refer in the callbackfn function. If thisArg is omitted, undefined is used as the this value.