gistfile1.js

const Gtk = imports.gi.Gtk;
const WebKit2 = imports.gi.WebKit2;

Gtk.init(null);

let webview = new WebKit2.WebView();

webview.connect('load-changed', function (event, view) {
	print("load-changed called")
});

webview.load_uri("http://www.google.com");

Gtk.main();