| /* |
| * Copyright 2015 Google Inc. All Rights Reserved. |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| var xhr = new XMLHttpRequest(); |
| xhr.onreadystatechange = function() { |
| var cobalt = document.createElement('span'); |
| if(xhr.readyState == 1) { |
| cobalt.textContent = "...Opened"; |
| } |
| else if (xhr.readyState == 2) { |
| cobalt.textContent = "...HeadersReceived"; |
| } |
| else if (xhr.readyState == 3) { |
| cobalt.textContent = "...Loading"; |
| } |
| else if (xhr.readyState == 4) { |
| cobalt.textContent = "...Loaded."; |
| var headers = document.createElement('span'); |
| headers.textContent = "Headers: " + xhr.getAllResponseHeaders(); |
| document.body.appendChild(headers); |
| } |
| document.body.appendChild(cobalt); |
| } |
| |
| xhr.open("GET", "https://www.youtube.com/tv"); |
| xhr.send(); |