//8. hide all sheets except the active one
function hideAllSheetsExceptActive() {
  var sheets = SpreadsheetApp.getActiveSpreadsheet().getSheets();
  sheets.forEach(function(sheet) {
    if (sheet.getName() != SpreadsheetApp.getActiveSheet().getName()) 
      sheet.hideSheet();
  });
};

MACRO GIÚP HIỆN TẤT CẢ CÁC SHEETS BỊ ẨN

//9. Unhide all sheets
function unhideAllSheets() {
  var sheets = SpreadsheetApp.getActiveSpreadsheet().getSheets();
  sheets.forEach(function(sheet) {
    sheet.showSheet();
  });
};