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December 16, 2015 09:58
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For Forebone library I'm currently working on something like simple wrapper for XMLHttpRequest object. This is first skeleton of this object:
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| <!DOCTYPE html> | |
| <html> | |
| <head> | |
| <meta charset="utf-8" /> | |
| <title>Client-server polygon</title> | |
| </head> | |
| <body> | |
| <div id="response"></div> | |
| <script type="text/javascript"> | |
| /** | |
| * Simple XMLHTTPRequest object wrapper | |
| * | |
| */ | |
| Ajax = { | |
| url : null, | |
| xhr : null, | |
| initialize: function(_url) { | |
| this.xhr = new XMLHttpRequest(); | |
| this.url = _url; | |
| }, | |
| _get: function(_param, success, error) { | |
| this.xhr.open('GET', this.url, false); | |
| this.xhr.send(_param); | |
| switch (this.xhr.status) { | |
| case 200: { | |
| success(this.xhr.responseText); | |
| }; break; | |
| default: { | |
| }; break; | |
| } | |
| } | |
| }; | |
| var responseDiv = document.getElementById('response'); | |
| Ajax.initialize('server/response.php'); | |
| Ajax._get(null, | |
| function(response) { | |
| // success callback | |
| responseDiv.innerHTML = response; | |
| }, | |
| function() { | |
| // error callback | |
| } | |
| ); | |
| </script> | |
| </body> | |
| </html> |
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| // server/response.php | |
| <?php | |
| echo "test"; |
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| Ajax = { | |
| url : null, | |
| xhr : null, | |
| async: false, | |
| initialize: function(_url, _async) { | |
| this.xhr = new XMLHttpRequest(); | |
| this.url = _url; | |
| if (_async) this.async = true; | |
| }, | |
| _get: function(_param, success, error) { | |
| this.xhr.open('GET', this.url, this.async); | |
| var that = this; | |
| this.xhr.onreadystatechange = function(e) { | |
| if (that.xhr.readyState == 4) { | |
| if (that.xhr.status == 200) { | |
| success(that.xhr.responseText); | |
| } | |
| } | |
| }; | |
| this.xhr.send(_param); | |
| if ( !this.async ) { | |
| switch (this.xhr.status) { | |
| case 200: { | |
| success(this.xhr.responseText); | |
| }; break; | |
| default: { | |
| }; break; | |
| } | |
| } | |
| console.log(this.async); | |
| } | |
| }; |
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The second version (gistfile3.js) is updated of async true/false handling.