javascript - forEach is not a function after object merge -

i created method based on this question, modified recursive. seems work, issue having getting error says:

uncaught typeerror: this.config.routes.foreach not function

var obj = {     config: {         maxloadloop: 5,         author: {color: "red"}     },     run: function(settings){         this.config = this.mergeoptions(this.config, settings);         this.config.routes.foreach(function(){/* stuff */});     },     mergeoptions: function(obj1, obj2){         var obj3 = {};         for(var attrname in obj1){             obj3[attrname] = obj1[attrname];         }         for(var attrname in obj2){             if(array.isarray(obj2[attrname]) || typeof obj2[attrname] === "object"){                 obj3[attrname] = this.mergeoptions(obj3[attrname], obj2[attrname]);             }else{                 obj3[attrname] = obj2[attrname];             }         }         return obj3;     } };  obj.run(mycustomsettings); 

i merging following 2 objects:

{     maxloadloop: 5,     author: {color: "red"} } 

and (json converted object):

{     "author": {         "name": "me",         "email": "my email"     },     "routes": [         {             "route": "/home",             "template": "/templates/home.html",             "default": true         },         {             "route": "/games",             "template": "/templates/games.html"         }     ] } 

the 2 seem merge fine, except error mentioned above...

i changed line 2:

var obj3 = (!obj1 && array.isarray(obj2)) ? [] : {}; 

if in case obj1 not exist , obj2 array, output should array.

if want handle case both obj1 , obj2 arrays, need put in bit more work.