JavaScript Array Iteration

JavaScript Array.map()

The map() method creates a new array with the results of calling a provided function on each element in the calling array.

Syntax

var new_array =

current_array.map(function(currentItem, index, array)

{

      //Application Logic to current array items 

         //return items for new array

})

Example1

Output

Exaple2- Mapping an array of numList to an array of square roots

Output

JavaScript Array.filter()

In this tutorial, you will learn about Array filter() for filtering of array element with help of examples:

Example1

Output

Example

Output