Array.from() lets you create arrays from:

• array like objects; or
• iterable objects (objects such as Map & Set)

Array.from() has an optional parameter mapFn, which allows you to execute a map() function on each element of the array being created.

It returns a new Array instance.

console.log(Array.from("Hemanta"))

// output
[
'H', 'e', 'm','a', 'n', 't', 'a'
]

console.log(Array.from([10, 20, 30], num => num * 10))

// output
[ 100, 200, 300 ]