each() by JoeSimmons

function each(array, fn, oThis) {
    'use strict';

    var name, i, len = array.length,
        hasOwnProperty = Object.prototype.hasOwnProperty;
        oThis = oThis || array;

    if ( hasOwnProperty.call(array, 'length') && hasOwnProperty.call(array, '0') ) {
        // if it's array-like, iterate through its numerical keys
        for (i = 0; i < len; i += 1) {
            if (fn.call(oThis, array[i], i, array) === 'stop') {
                break;
            }
        }
    } else if (typeof array === 'object') {
        for (name in array) {
            if ( hasOwnProperty.call(array, name) ) {
                if (fn.call(oThis, array[name], name, array) === 'stop') {
                    break; // 2 if statements for readability
                }
            }
        }
    }

    return array;
}