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copied!<p>In principle, you want a container where to place all the newly fetched messages.</p> <pre><code><div id="messages"> <! -- message 1 --> <! -- message 2 --> <div id="newMessages"> </div> </div> </code></pre> <p>Then you want a button (or anchor, or whatever) that you can hook up to a fetch-more-method:</p> <pre><code><input type="button" value="Fetch more messages" id="btnFetchMessages" /> </code></pre> <p>Place the hookup somewhere inside DOMReady:</p> <pre><code>var lastFetchedMessage = 0; $('#btnFetchMessages').click(function() { $.ajax({ url: '/getMessages.php', type: 'POST', contentType: 'application/json; charset=utf-8', dataType: 'json', data: '{"lastId":'+lastFetchedMesasge+'"}', success: newMessagesReceived }); </code></pre> <p>So on a click of the button we submit an AJAX request to <code>getMessages.php</code> where you'll look at the <code>lastFetchedMessage</code> and return the 10 or so next messages based upon that. From that page, you return a <a href="http://json.org/" rel="nofollow noreferrer">JSON</a> array containing the messages, with all their info that you're interested in.</p> <p>Upon a successful AJAX reques, the funciton <code>newMessagesReceived</code> will be called:</p> <pre><code>function newMessagesReceived(result) { var container = $('#newMessages'); for(var i = 0; i < result.length; i++) { var message = $('<div>' + result[i].body + '</div>'); container.append(message); } var lastFetchedMessage = result[i].id; } </code></pre> <p>The above assumes that you return an array with messages, that have at least the properties <code>body</code> and <code>id</code>:</p> <pre><code>[ { "body": "new message1", "id": "10" }, { "body": "new message2", "id": "11" } ] </code></pre>

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