Function isArrayLike

src/modules/jquery.js:549–566

(obj)

  );

  function isArrayLike(obj) {
    // Support: real iOS 8.2 only (not reproducible in simulator)
    // `in` check used to prevent JIT error (gh-2145)
    // hasOwn isn't used here due to false negatives
    // regarding Nodelist length in IE
    var length = !!obj && 'length' in obj && obj.length,
      type = toType(obj);

    if (isFunction(obj) || isWindow(obj)) {
      return false;
    }

    return (
      type === 'array' ||
      length === 0 ||
      (typeof length === 'number' && length > 0 && length - 1 in obj)
    );
  }

  function nodeName(elem, name) {
    return elem.nodeName && elem.nodeName.toLowerCase() === name.toLowerCase();