method – 'get', 'post', … – url – 'http://pewpew.com', '/file.jpg', 'file.jpg', '//site.ru:8080/' • send(body) – body – post тело 'name=name&time=1345678&message=hello' • readyState: Number • responseText: String • status: Number – HTTP статус ответа – 200, 404, 500 • addEventListener(event, function) • ... https://developer.mozilla.org/en-US/docs/DOM/ XMLHttpRequest