JavaScript Templates

Indo direto pra categoria "pq diabos eu nao pensei nisso antes", JavaScript Templates:

http://trimpath.com/project/wiki/JavaScriptTemplates

JavaScript Templates let’s you do template-style programming (like PHP/ASP/JSP) completely in your web browser. It’s an open-source tool to help make writing new-fangled rich web applications easier, like OddPost/GMail/Bloglines.

Here’s a JST sample that shows off some features like expressions, for loops, forelse, and if syntax…

Hello ${customer.firstName|default:"Mr."} ${customer.lastName}<br/>
Your recent orders are:
<ul>
  {for order in customer.getRecentOrders()}
    <li>${order.orderNum} - ${order.status|capitalize}: ${order.grandTotal}
        {if order.requestedShipDate < new Date().getTime() && order.status != "shipped"}
        Please contact customer service.
        {/if}
    </li>
  {forelse}
    <li>You have no orders yet. </li>
  {/for}
</ul>

The code within the ${…} and {for …} and {if …} markup is just standard JavaScript, so you’re not learning yet another new expression language.