Add Menu And Tray Icon

The following codes show how to add a Window Menu and Tray Icon.

var menubar = app.createMenu([{
  label:'&File',
  submenu:[
    {
      label:'E&xit',
      action: function(){
        window.close();
      }
    }
  ]
},{
  label:'&Window',
  submenu:[
    {
      label:'Fullscreen',
      action:function(item) {
        window.frame.fullscreen();
        console.log(item.label+" called.");
      }
    },
    {
      label:'Minimize',
      action:function(){
        window.frame.minimize();
      }
    },
    {
      label:'Maximize',
      action:function(){
        window.frame.maximize();
      }
    },{
      label:''//separator
    },{
      label:'Restore',
      action:function(){
        window.frame.restore();
      }
    }
  ]
}]);

menubar.on('select',function(item){
  console.log("menu item "+item.label+" clicked");
});

var trayMenu = app.createMenu([{
  label:'Show',
  action:function(){
    window.frame.show();
  },
},{
  label:'Minimize',
  action:function(){
    window.frame.hide();
  }
},{
  label:'Exit',
  action:function(){
    window.close();
  }
}]);

var statusIcon = app.createStatusIcon({
  icon:'./data/content/icons/32.png',
  tooltip:'AppJS Hello World',
  menu:trayMenu
});

Then set the menu bar with the declared variable.

window.on('create', function(){
  console.log("Window Created");
  window.frame.show();
  window.frame.center();
  window.frame.setMenuBar(menubar);
});