strProp.js

/**
 * Reach nested data object properties via string.
 *
 * @param {object} obj
 * @param {string} desc
 *
 * @return {mixed}
 */
_.strProp = function (obj, desc) {
  var arr = desc.split('.');
  while (arr.length && (obj = obj[arr.shift()]));
  return obj;
};


/**
 * Example...
 */
console.log(_.strProp({a: {j: 1, b: 2}, c: 3}, 'a.b'));
//=> 2