Get google sheet names and #Gids

I use google sheet extension and it seems to be working so fine
I have a google sheet file with many sheets and I need to get the Gids for every sheet and store in a list
Any hint?

You can do this with Google apps script

could you show me how

function getSheetId()
  var ss=SpreadsheetApp.getActive();
  var sh=ss.getActiveSheet();
  var allSheets=ss.getSheets();
  var ids=[];
  for(var i=0;i<allSheets.length;i++)


Thanks alot for your support and showing the credits
just last think ...
I am not familiar with scripting...
could you tell me how to include this in my Graphical interface and put the results in both sheet names list and gids list
thanks again