Get value from an object from a path inside the object

ObjectPathValue.js

/**
 * Get a value from an object by its path
 * @param  {Object} obj  
 * @param  {String} path Path to the value key1.key2.key3...
 * @return {Object}      Value
 */
function valuePathObject(obj, path) {
    path.split(".").forEach(function(item){ 
        obj = obj[item]
    });
    return obj;
}

Exemple :

var toro = {
  description : {
    fr_fr : {
      size : 40,
      name: "toto"
    }
  }
}

var selector = "description.fr_fr.size";

console.log(valueRecursive(toro,selector));
// 40