Iterator join()The join() method of an Iterator object returns a string concatenation of all the iterator's items, separated by commas or a given separator string. It's similar to the join() method of arrays.iteratorsIteratorslimitedhttps://tc39.es/proposal-iterator-join/#sec-iterator.prototype.joinhttps://developer.mozilla.org/docs/Web/JavaScript/Reference/Global_Objects/Iterator/joinjavascript.builtins.Iterator.joinhttps://nowyoucanuse.com/features--iterator-join.html