Created
February 16, 2011 00:23
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JS ecosystems
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| <!doctype html> | |
| <html> | |
| <head> | |
| <title>Messages</title> | |
| <meta charset="utf-8" /> | |
| </head> | |
| <body> | |
| <ul id="messages"> | |
| <li id="message-1"> | |
| <div class="message">Message</div> | |
| <div class="controls"><a href="/edit/1">Edit</a> <a href="/delete/1">Delete</a></div> | |
| </li> | |
| <li id="message-2"> | |
| <div class="message">Message</div> | |
| <div class="controls"><a href="/edit/2">Edit</a> <a href="/delete/2">Delete</a></div> | |
| </li> | |
| </ul> | |
| <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.5.0/jquery.min.js"></script> | |
| <script> | |
| jQuery(function ($) { | |
| // HTML messages scope stored in a jQuery object | |
| var $messageList = $('#messages'); | |
| // HTML message scope, for every message | |
| var $messages = $messageList.children(); | |
| // Mock XHR | |
| $.get = function (url, callback) { | |
| if (url.indexOf('edit') > -1) { | |
| callback('<form><h2>Edit</h2><input type="submit" value="save" />'); | |
| } else { | |
| callback('success'); | |
| } | |
| }; | |
| $messages.each(function () { | |
| // Individual message scope | |
| var $message = $(this); | |
| // Delegate control links to the control | |
| $message.find('.controls') | |
| .delegate('a', 'click', function (e) { | |
| // Individual link scope | |
| var $link = $(this); | |
| var linkText = $link.text(); | |
| // Prevent Event, maybe we should call this, Preevent | |
| e.preventDefault(); | |
| // Send request via XHR GET | |
| $.get($link.attr('href'), function (response) { | |
| // Handle response depending on request type (e.g. Edit or Delete) | |
| if (linkText === 'Edit') { | |
| // For edit, response will be the edit form | |
| $message.html(response); | |
| } else if (linkText === 'Delete') { | |
| // For delete, response will simply indicate success or failure | |
| if (response === 'success') { | |
| $message.remove(); | |
| $messageList.before('<div class="success">Message Deleted</div>'); | |
| } else { | |
| $messageList.before('<div class="error">Message could not be Deleted</div>'); | |
| } | |
| } | |
| }); | |
| }); | |
| }); | |
| }); | |
| </script> | |
| </body> | |
| </html> |
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