How does Array.from work? What arguments does it accept?

Array.from is a static method in JavaScript that creates a new array from an iterable or array-like object.

Arguments:

1. arrayLike — required. An object with an iterable interface or array-like (e.g., string, NodeList, arguments).
2. mapFn — optional. A function to apply to each element before adding it to the new array.
3. thisArg — optional. The value to use as this when executing mapFn.

Example:

const str = 'hello';
const arr = Array.from(str, ch => ch.toUpperCase());
console.log(arr); // ['H', 'E', 'L', 'L', 'O']

Thus, Array.from is convenient for converting iterable objects into arrays with the ability to transform elements.