javascript - variable is not getting defined even though the code works somwhere else -

so building game in 3 js , trying make multiplayer throught socket.io loading of characters array called players on server side

and pass each client when connect

socket.on('addplayer', function(username) {     players.push(username)     console.log(username + " joined")     console.log("online users " + players)     socket.broadcast.emit('syncplayers', players)     socket.emit('syncplayers', players) }) 

and on client syncplayers looks

socket.on('syncplayers', function(players) {     players.foreach(function(value) {         if (value == username) {             console.log("not adding " + value + " thats ")             loadplayerdata(username)         } else {             console.log("player online " + value);             newplayer = value;             loadplayerdata(newplayer)             addplayer(newplayer)         }     }); }) 

then calls wich sends server data

function loadplayerdata(playername) {     console.log(playername)     console.log("phase1")     socket.emit('loadplayerdata', playername) } 

then called , retrieved player name , data of players location problem lies

socket.on('loadplayerdata', function(data, username) {     tomove = threeobjects[username + "char"]     if (data == "null" || "") {         console.log(username + " new")     } else {         console.log(username + " exists")         console.log(tomove)         tomove.position.set(world.spawnpointx, world.spawnpointy, world.spawnpointz)     } 

i keep getting uncaught typeerror: cannot read property 'position' of undefined

even though can use this

function addplayer(playername) {      var charobjectname = playername + "char"     var threeobject = models.tent1.mesh.clone();     scene.add(threeobject)        //threeobject.position.set(world.spawnpointx, world.spawnpointy, world.spawnpointz)     // set reference     threeobjects[charobjectname] = threeobject; } 

btw have object

   var threeobjects = {}; 

can please explain why wont work , how fix it

you can read this answer understand difference between dot , brackets notation.

you getting error because, tomove seems undefined , dot notation throw error if new user joins , if object empty.

check if helps. assign object key username , position value array this, {"usernamechar": {"position": [x,y,z]}}

socket.on('loadplayerdata', function(data, username) {     if (data == "null" || "") {         console.log(username + " new")     } else {         console.log(username + " exists")         threeobjects[username + "char"]["position"] = [world.spawnpointx, world.spawnpointy, world.spawnpointz]      } }