Map method in JavaScript

Concise explanation of map() method in Js

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1. Creates a new array.
2. Iterates through an array.
3. Runs a callback function for each element in the array.
4. Adds the result of that callback function to the new array.
5. Returns the new array.

Note: map() always returns a new array of the same length.

How does it work?

Note: learn more about callback function parameters here.

Examples:

1. Triple the value of each element in the given array.

2. Return a new array with the square root of all the values of the given array.