| <!DOCTYPE html> | |
| <script> | |
| function fetch_url(url) { | |
| return new Promise(function(resolve, reject) { | |
| var request = new XMLHttpRequest(); | |
| request.addEventListener('load', function(event) { | |
| if (request.status == 200) | |
| resolve(request.response); | |
| else | |
| reject(Error(request.statusText)); | |
| }); | |
| request.open('GET', url); | |
| request.send(); | |
| }); | |
| } | |
| </script> |