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ES6 - Array Method map()
map() method creates a new array with the results of calling a provided function on every element in this array.
Syntax
array.map(callback[, thisObject]);
Parameters
callback − Function that produces an element of the new Array from an element of the current one.
thisObject − Object to use as this when executing callback.
Return Value
Returns the created array.
Example
var numbers = [1, 4, 9];
var roots = numbers.map(Math.sqrt);
console.log("roots is : " + roots );
Output
roots is : 1,2,3
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