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    <p>You could do this:</p> <pre><code>if($('#THIS_DIV','#THIS_PARENT').length == 1) { } </code></pre> <p>By <a href="http://docs.jquery.com/Core/jQuery#expressioncontext" rel="noreferrer">specifying a context</a> for the search (the second argument) we are basically saying "look for an element with an ID of <code>#THIS_DIV</code> within an element with ID of <code>#THIS_PARENT</code>". This is the most succint way of doing it using jQuery.</p> <p>We could also write it like this, using <a href="http://docs.jquery.com/Traversing/find" rel="noreferrer"><code>find</code></a>, if it makes more sense to you:</p> <pre><code>if($('#THIS_PARENT').find('#THIS_DIV').length == 1) { } </code></pre> <p>Or like this, using <a href="http://docs.jquery.com/API/1.2/Traversing/parents" rel="noreferrer"><code>parents</code></a>, if you want to search from the child upwards:</p> <pre><code>if($('#THIS_DIV').parents('#THIS_PARENT').length == 1) { } </code></pre> <p>Any of these should work fine. The <code>length</code> bit is necessary to make sure the length of the "search" is > 0. I would of course personally recommend you go with the first one as it's the simplest.</p> <p>Also, if you are referring to an element by ID it's not necessary (although of course perfectly okay) to preface the selector with the tag name. As far as speed, though, it doesn't really help as jQuery is going to use the native <code>getElementById()</code> internally. Using the tag name is only important when selecting by class, as <code>div.myclass</code> is much, much faster than <code>.myclass</code> if only <code>&lt;div&gt;</code> elements are going to have the particular class.</p>
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    1. POHow can I check if an element is within another one in jQuery?
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    1. USPaolo Bergantino
    1. USPaolo Bergantino
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    1. POHow can I check if an element is within another one in jQuery?
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    1. COBecause I managed to get here by searching "javascript", here's a way to do it the same as the `parent()` version using the Prototype library: `if ($('THIS_DIV').up('#THIS_PARENT')) {..}`
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      1. USIzkata
 

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A row detail

Detail views are divided into sections. All the information in the data section comes from columns in the selected row. The other sections display data from other, related rows.

Related data can be related in a to-one or a to-many fashion. Captions of data related in a to-many fashion link to a list view showing a filtered view of the table.

Try moving around until you find a non-empty to-many entry and click on the label to get to one. You can move back to the root by clicking on the database name in the header.

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