Google apps script idesApp.getUi（）| | false--像一个符咒一样工作：） var fileUI = SpreadsheetApp.getActiveSpreadsheet() ? SpreadsheetApp.getUi() : (DocumentApp

idesApp.getUi（）| | false--像一个符咒一样工作：）

var fileUI = SpreadsheetApp.getActiveSpreadsheet() ? SpreadsheetApp.getUi() : (DocumentApp.getActiveDocument() ? DocumentApp.getUi() : (SlidesApp.getActivePresentation() ? SlidesApp.getUi() : false));

function onInstall(e) {
  onOpen(e);
}

function onOpen(e) {
  if (fileUI) {
    var menu = fileUI.createAddonMenu();
    if (e && e.authMode == ScriptApp.AuthMode.NONE) {
      menu.addItem('Please Login', 'login');
    } else {
      menu.addItem('Hurray', 'itWorks');
    }
    menu.addToUi();
  }
}

function login() {
  fileUI.alert('Please login to access this add-on');
}

function itWorks() {
  fileUI.alert('Hurray! It works');
}

{
  "timeZone": "Asia/Kolkata",
  "dependencies": {
  },
  "oauthScopes": [
    "https://www.googleapis.com/auth/documents.currentonly",
    "https://www.googleapis.com/auth/presentations.currentonly",
    "https://www.googleapis.com/auth/spreadsheets.currentonly"
  ],
  "exceptionLogging": "STACKDRIVER"
}