I'm trying to write a wrapper for Twitter using Electron (formerly Atom Shell).

My main.js file (it looks almost identical to the Hello World example, I just changed it in one place):

var app = require('app');  // Module to control application life.

var BrowserWindow = require('browser-window');  // Module to create native browser window.



// Report crashes to our server.

require('crash-reporter').start();



// Keep a global reference of the window object, if you don't, the window will

// be closed automatically when the javascript object is GCed.

var mainWindow = null;



// Quit when all windows are closed.

app.on('window-all-closed', function() {

  if (process.platform != 'darwin')

    app.quit();

});



// This method will be called when atom-shell has done everything

// initialization and ready for creating browser windows.

app.on('ready', function() {



  // Create the browser window.

  mainWindow = new BrowserWindow ({'width':1000,'height':600});

  // and load the index.html of the app.

  mainWindow.loadUrl('https://twitter.com');



  // Emitted when the window is closed.

  mainWindow.on('closed', function() {

    // Dereference the window object, usually you would store windows

    // in an array if your app supports multi windows, this is the time

    // when you should delete the corresponding element.

    mainWindow = null;

  });

});

I try to call alert() function right after mainWindow.loadUrl() but it does not execute.

I understand that main.js file is like the server side of my app, but the question is... How can I call a JavaScript function on page? Where should I write the code?

For example, I want to perform this:

$(document).ready(function() {

    alert(Hurray!);

});