Javascript querying object traversal

traverse_object.js

/**
 * Returns a value or array of values by traversing the `object` using `path`
 *
 * @param object {Object}
 * @param path {String}
 * @returns value {String, Array}
 *
 * traverseObject({a: {b: [{c: {d: 'gotcha!'}}, {c: {d: 'yes!'}}]}}, 'a__b____c__d');
 * --> ['gotcha!', 'yes!']
 * traverseObject({a: {b: [{c: 'gotcha!'}, {c: 'yes!'}]}}, 'a__b____c');
 * --> ['gotcha!', 'yes!']
 * traverseObject({a: {b: {c: 'gotcha!'}}}, 'a__b__c');
 * --> 'gotcha!
 * traverseObject({a: {b: [{c: 'gotcha!'}]}}, 'a__b__0__c');
 * --> 'gotcha!
 */
function traverseObject(object, path) {
    var keys = path.split('__'),
        value = object,
        m;

    _.each(keys, function (key) {
        if (m) {
            value = _.pluck(value, key);
            m = false;
            if (_.isObject(value[0])) {
                m = true;
            }
        } else if (key === '') {
            m = true;
        } else {
            value = value[key];
        }
    });
    return value;
}