Why don't Go + js templates change?

Question

JavaScript

I want to change the "main" template to "page2" .

{{define "index"}}
{{template "head"}}

    <div class = "scene">
         {{template "main"}}
    </div>

{{template "foot"}}
{{end}}

For this I am reading json from the client

func WebSocketConnect(w http.ResponseWriter,r *http.Request)  {
  conn,err := upGrader.Upgrade(w, r, nil)
  defer conn.Close()
  if err != nil {
    log.Println(err)
    return
  }


  webSocketHandler(conn)

}
func webSocketHandler(conn *websocket.Conn) {

  data := conn.ReadJSON(&msg)

  if data != nil {
    log.Fatal(data)
    return
  }

  LoadVista(msg.Temp,conn)

}

Then I prepare the template and send it to the socket

var (
  indexTemplate = template.Must(template.ParseFiles(indexVista,mainVista,headVista,footVista))
  page2Template = template.Must(template.ParseFiles(loginVista))
)
/****************************************************************************/


func LoadVista(nameTemplate string, conn *websocket.Conn) {
  switch nameTemplate {
  case "page2":
    templateWsRender(nameTemplate,conn)
  }

}
func templateWsRender(name string,conn *websocket.Conn){
  //defer conn.Close()
  var buf  bytes.Buffer
  data := page2Template.ExecuteTemplate(&buf,name,nil)
  if data!=nil{
    log.Fatal(data)
  }
  err := conn.WriteMessage(1,buf.Bytes())
  if err!=nil{
    log.Fatal(err)
  }

}

this is the client code

var socket = new WebSocket('ws://localhost:7030/ws' )

socket.onmessage = function (event) {
    var message = event.data
    loadVista(message)
}

elem.addEventListener( "click" , sendQuery);
function sendQuery() {
    var page = {
        query_type :"openLink",
        temp: "page"
    }
    var event = JSON.stringify(page);

    socket.send(event);
}

function loadVista(message) {
    //alert(message)
    document.getElementById("scene").innerHTML = message.data;
}

if you use alert, you can see that the code from another template comes, but for some reason it does not change.

Answer 1

if you can see by //alert(message) that the code is coming from another template, then message.data; - incorrect expression.

var a = {'data':1}; 
alert(a); //[object] 
// если бы там был валидный объект, вы бы не увидели содержимого через alert

Make sure you put message.data in innerHtml and not message.
Maybe you need it like this -
or

message = JSON.parse(message);
document.getElementById("scene").innerHTML = message.data;