Returns the value in within a requested path in a nested object (tree traversal), without using "eval" / "new Function".

RecursiveObjectPathResolver.js

/**
 * assumption: path contains only key names and dots (.), doesn't handle function calls or array indices
 */
function getVal (obj, path) {
  if (path) {
    var s = path.split('.'),
      cur = s.shift();
    if (obj.hasOwnProperty(cur)) {
      return getVal(obj[cur], s.join('.'));
    }
  } else if (!path) {
    return obj;
  }
  throw "item not found";
};

// example:
// getVal({a: {b: 2, c: {t: 10}}}, 'a.c.t')
// > 10