| 1 | | // ----- main exported object |
| 2 | | // --------------------------------------- |
| 3 | 1 | var ajax = module.exports = {}; |
| 4 | | |
| 5 | | |
| 6 | | // ----- reusable response methods |
| 7 | | // --------------------------------------- |
| 8 | 1 | function onload(req, fn) { |
| 9 | 0 | if (req.status >= 200 && req.status < 400) { |
| 10 | 0 | var text = req.responseText; |
| 11 | 0 | var data = req.responseType === 'json' ? JSON.parse(text) : text; |
| 12 | 0 | return fn(null, data); |
| 13 | | } |
| 14 | | else { |
| 15 | 0 | return fn(new Error('Server returned an error')); |
| 16 | | } |
| 17 | | }; |
| 18 | | |
| 19 | 1 | function onerror(fn) { |
| 20 | 0 | return fn(new Error('Connection error')); |
| 21 | | } |
| 22 | | |
| 23 | | |
| 24 | | // ----- GET requests |
| 25 | | // --------------------------------------- |
| 26 | 1 | ajax.get = function(url, fn) { |
| 27 | | |
| 28 | 0 | var req = new XMLHttpRequest(); |
| 29 | | |
| 30 | 0 | req.open('GET', url, true); // method, url, async boolean |
| 31 | | |
| 32 | 0 | req.onload = onload(req, fn); |
| 33 | 0 | req.onerror = onerror(fn); |
| 34 | | |
| 35 | 0 | req.send(); |
| 36 | | |
| 37 | | }; |
| 38 | | |
| 39 | | |
| 40 | | // ----- POST requests |
| 41 | | // --------------------------------------- |
| 42 | 1 | ajax.post = function(url, data, fn) { |
| 43 | | |
| 44 | 0 | var req = new XMLHttpRequest(); |
| 45 | | |
| 46 | 0 | req.open('POST', url, true); |
| 47 | 0 | req.setRequestHeader('Content-Type', 'application/x-www-form-urlencoded; charset=UTF-8'); |
| 48 | | |
| 49 | 0 | req.onload = onload(req, fn); |
| 50 | 0 | req.onerror = onerror(fn); |
| 51 | | |
| 52 | 0 | req.send(data); |
| 53 | | |
| 54 | | }; |