//Given an array, "findShortestWordAmongMixedElements" returns the shortest string within the given array.
//
// Notes:
// * If there are ties, it should return the first element to appear in the given array.
// * Expect the given array to have values other than strings.
// * If the given array is empty, it should return an empty string.
// * If the given array contains no strings, it should return an empty string.
function findShortestWordAmongMixedElements(arr) {
	ret = '';
	arr.forEach(x => {
		if (typeof x == 'string' || x instanceof String) {
			if (!ret || x.length < ret.length) {
				ret = x;
			}
		}
	});
	return ret;
}
var output = findShortestWordAmongMixedElements([4, 'two', 2, 'three']);
console.log(output); // --> 'two'