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POHow do you structure your web applications to make AJAX and DHTML easier?
 

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  1. POHow do you structure your web applications to make AJAX and DHTML easier?
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    <p>Given this structure for a websinte</p> <pre><code>&lt;html&gt; &lt;head&gt; &lt;!-- CSS at the beginning--&gt; &lt;link/&gt; &lt;/head&gt; &lt;body&gt; &lt;div id="mainContainer"&gt; &lt;div id="side"&gt;&lt;/div&gt; &lt;div id="content"&gt; &lt;!-- DHTML awesomeness happens here --&gt; &lt;/div&gt; &lt;/div&gt; &lt;!-- Scripts at the end --&gt; &lt;script/&gt; &lt;script&gt; /* code that attach the JS logic to the HTML items */ &lt;/script&gt; &lt;/body&gt; &lt;/html&gt; </code></pre> <p>Using normal web navigation, the page renders totally in HTML, and following the progressive enhancement approach, at the end I look for some specific ids or classes, and I give them dynamic behavior using javascript and specially jQuery. This enhancement code happens at the very end of the body, after the external scripts has been downloaded.</p> <p>In <code>#content</code>, lot of jQuery AJAX interactions happens, some of them get other partial views from the server and insert them in the page, but then I have to look for those ids and classes again and attach javascript objects to this new elements.</p> <p>It could be very cumbersome, since you don't want to reapply controllers, event handlers or whatever to objects that already have them.</p> <p>So far, the only solution that I found is put in my partial views:</p> <pre><code>@if(Request.IsAjaxRequest()) { &lt;script&gt; /* code that attach the JS controllers to the HTML items of this view */ &lt;/script&gt; } </code></pre> <p>I think that a similar problem happens for example when you want <code>$('input.date').datepicker()</code> , and you add new <code>&lt;input type="text" class="date"/&gt;</code> elements dynamically, the new ones have no date picker unless you rexecute the jQuery sentence.</p> <p>For example, considering that in <code>#content</code> I have an <code>&lt;input type="text" class="date"/&gt;</code>: </p> <ol> <li><p>In order to make the jQuery datepicer work the first time, I have to call <code>$('input.date').datepicker()</code> at the end of the <code>&lt;body&gt;</code>, after the external <code>&lt;script&gt;</code> declarations. </p></li> <li><p>If the page download partial views where are new <code>&lt;input type="text" class="date"/&gt;</code> elements, I have to put the initialization call in the view for ajax calls.</p></li> </ol> <p>So I end with repeated code, something that I don't want specially in JS where I cannot refactor the code as easily as in C#.</p> <p>This is something that is driving me nuts in the last week, wondering if there is a better way to accomplish this? A better technique, or other whole approach?</p> <p>How do you structure your web applications?</p> <p>Kind regards.</p> <p>PS: Would be nice to have something like <code>.live()</code> or <code>.delegate()</code> but not only related with events, wouldn't it? Is not there any event that jQuery/browser raises everytime that something is added to the DOM?</p>
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    1. COAs far as the structure is concerned, I find it easier to use a layout and sections for starters. When I need a widget let's say to render consistently I have my choice of Html.RenderPartial or Html.RenderAction for my partial views. Depending on the viewModel and what I am after. I try to stay away from using too much Jquery and leverage MVC for what it was built for.
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    2. COOther than my rambling of a comment, your structure isn't really a structure at all.
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    3. COwhy is it not a structure at all?
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