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    <p>I think I see a couple issues here. I'd recommend breaking up the problem a bit since as you say you're new to jQuery. Start out using a manual button to retrieve the latest posts through AJAX. Once you've handled that then move on to the periodic updater.</p> <p>The second thing I would recommend is look into various templating methods that people use with jQuery. That is to say that you should have Ruby simply return a JSON data structure which you can then have jQuery take and populate a post template with the various pieces of data.</p> <p>Here's an example of a templating method I've used on one of my sites. I start out with the following static HTML.</p> <pre><code> &lt;table id="tblExpenses"&gt;&lt;tbody&gt; &lt;tr&gt; &lt;th&gt;Date&lt;/th&gt; &lt;th&gt;Title&lt;/th&gt; &lt;th&gt;Amount&lt;/th&gt; &lt;th&gt;Attachments&lt;/th&gt; &lt;th colspan="2"&gt;&amp;nbsp;&lt;/th&gt; &lt;/tr&gt; &lt;tr class="expenseTemplate" style="display: none;"&gt; &lt;td class="litDate"&gt;&lt;/td&gt; &lt;td class="litTitle"&gt;&lt;/td&gt; &lt;td class="litAmount"&gt;&lt;/td&gt; &lt;td class="litAttachments"&gt;test&lt;/td&gt; &lt;td&gt;&lt;a class="lnkEdit" href="#"&gt;Edit&lt;/a&gt;&lt;/td&gt; &lt;td&gt;&lt;a class="lnkDelete" href="#"&gt;Delete&lt;/a&gt;&lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt;&lt;/table&gt; </code></pre> <p>I then perform an AJAX request for expenses stored in the database and dynamically create new rows to insert into the Expenses table.</p> <pre><code>function showTaxYear(taxYearId) { $.ajax({ type: "GET", contentType: "application/json; charset=utf-8", dataType: "json", url: "/Services/GetExpensesByTaxYearId", data: { taxYearId: taxYearId }, success: function(msg) { $.each(msg.Expenses, function(index, expense) { var row = $("#tblExpenses tr.expenseTemplate") .clone() .removeClass("expenseTemplate") .show() .addClass("expense") .addClass("expenseid_" + expense.ID); row.find("td.litDate").text(expense.Date); row.find("td.litTitle").text(expense.Title); row.find("td.litAmount").text(expense.Total); row.find("a.lnkEdit").attr("data-id", expense.ID) .unbind().click(function() { editExpense($(this)); }); row.find("a.lnkDelete").attr("data-id", expense.ID) .unbind().click(function() { deleteExpense($(this)); }); if (expense.Attachment != "") row.find("td.litAttachments").empty().append($("&lt;a&gt;View&lt;/a&gt;").attr("href", expense.Attachment)); else row.find("td.litAttachments").empty(); row.insertBefore("#tblExpenses tr.expenseTemplate"); }); } }); } </code></pre> <p>GetExpensesByTaxYearId returns a JSON result that looks like this</p> <pre><code>{"Expenses":[{"ID":9,"Title":"Some expense","Description":"","Date":"02/02/2010","Amount":"$10.00","Tax":0.00,"Attachment":"","Total":"$10.00"}]} </code></pre> <p>Once you've done that you can actually check to see if you've already created an element for whatever data you get back from Ruby by doing a jQuery search. In my example for instance I can check to see if an element exists with the class <code>expenseid_&lt;Identifier&gt;</code>. if it does, I've already rendered that expense.</p> <p>I know this is probably a lot to chew on but streaming AJAX content has a lot to it. Let me know if I can clarify further.</p>
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    1. CO@Spencer Thanks! I'll try starting with a simpler version. I'm confused though about how and where you call `showTaxYear` with a parameter.
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    2. CO@Wesley - In my application I call it when the user selects a tax year from a drop down list but for your purposes I don't think you need a parameter so I'd just bind a similar parameterless function to a button click event. Hope that makes sense.
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    3. CO@Spencer But don't I need to pass the server the ID of the post?
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