go-ethereum/cmd/mist/assets/ext/http.js

// Copyright (c) 2013-2014, Jeffrey Wilcke. All rights reserved.
//
// This library is free software; you can redistribute it and/or
// modify it under the terms of the GNU General Public
// License as published by the Free Software Foundation; either
// version 2.1 of the License, or (at your option) any later version.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
// General Public License for more details.
//
// You should have received a copy of the GNU General Public License
// along with this library; if not, write to the Free Software
// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
// MA 02110-1301  USA

// this function is included locally, but you can also include separately via a header definition
function request(url, callback) {
	var xhr = new XMLHttpRequest();
	xhr.onreadystatechange = (function(req) {
		return function() {
			if(req.readyState === 4) {
				callback(req);
			}
		}
	})(xhr);
	xhr.open('GET', url, true);
	xhr.send('');
}