30-seconds-of-code/snippets/isArrayLike.md

isArrayLike

Checks if the provided argument is array-like (i.e. is iterable).

Use Array.from() and a try... catch block to check if the provided argument is array-like.

const isArrayLike = arr => {
  try {
    Array.from(arr);
    return true;
  } catch (e) {
    return false;
  }
};

isArrayLike(document.querySelector('.className')); // true
isArrayLike('abc'); // true
isArrayLike(null); // false