Given a path, get property of an object

_getFromPath.js

function getFromPath(obj, path, defaultValue) {
    var props = path.split('.'),
        newObj = obj;

    for (var i = 0, len = props.length; i < len; i++) {
        if (newObj[props[i]] !== null && newObj[props[i]] !== undefined) {
            newObj = newObj[props[i]];
        } else {
            return defaultValue || null;
        }
    } 

    return newObj;
}