Array.from() method returns a new array from any array-like or iterable object.

syntax ↴

Array.from(arrayLike, mapFn, thisArg) ↴

arrayLike An iterable or array-like object to convert to an array.

mapFn (optional). Function to call on every element of the array.

thisArg (optional). Value to use as this when executing mapFn.

array-like object is any object that has a length property and has indexed elements.

iterable object can be an object such as Map or Set; or, if the object is not iterable,

To convert an ordinary object that's not iterable or array-like to an array (by enumerating its property keys, values, or both), use Object.keys(), Object.values(), or Object.entries().

Array.from() method never creates a sparse array. If the arrayLike object is missing some index properties, they become undefined in the new array.

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