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