Javascript Recursion returning undefined -

i'm struggling in recursive javascript function find specific subdirectory. code:

function navigatetoparent() {     var parentfullpath = parentdirectory(); // gets full path string     if (parentfullpath != null) {         var parent = getdirectorybyname(parentfullpath, rootdirectory);         // set parent directory object current 1         currentdirectory(parent);     } }  function getdirectorybyname(fullname, mydirectory) {     if (mydirectory.fullname == fullname) {         return mydirectory;     } else {         var subs = mydirectory.subdirectories;         (i = 0; < subs.length; i++) {             return getdirectorybyname(fullname,subs[i]);         }     } } 

every directory object has properties fullname(string),subdirectories(array of directories) , files(array of files). aim correct directory object, it's fullname matching.

i know, have break loop in way, don't know how exactly.

after overthinking logic came solution (seems work):

function getdirectorybyname(fullname, mydirectory) {     if (mydirectory.fullname == fullname) {         return mydirectory;     } else {         var subs = mydirectory.subdirectories;         (i = 0; < subs.length; i++) {             var match = getdirectorybyname(fullname, subs[i]);             if (typeof match !== "undefined"){                 return match;             }         }     } }