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    <p>If your selector returns 0 elements then it could not be located in the DOM.</p> <pre><code>if( $('#cookies_notification').length === 0 ) { // Do something } </code></pre> <p>Here is a working example: <a href="http://jsfiddle.net/LT7g8/" rel="nofollow noreferrer">http://jsfiddle.net/LT7g8/</a></p> <p>Alternatively, see this question: <a href="https://stackoverflow.com/questions/31044">Is there an “exists” function for jQuery?</a></p> <p>If you are simply wondering whether the object is hidden (and not completely absent from the DOM), check out the <a href="http://api.jquery.com/hidden-selector/" rel="nofollow noreferrer">jQuery <code>:hidden</code> selector</a>. If the element exists but has been hidden, this selector will return the element. It will not select the element if it does not exist, nor if it does exist and is visible.</p> <p>For your situation it sounds like you want to detect first if the element exists, and then detect whether it has been hidden by <code>SlideUp()</code>.</p> <pre class="lang-js prettyprint-override"><code>var objCookieNotification = $('#cookies_notification'); if ( objCookieNotification.length === 0 ) { // Notification does not exist in the DOM. // Add it to the DOM here. } else if ( objCookieNotification.is(':hidden') ) { // Notification exists in the DOM but is hidden. // Make it visible again here. } else { // The notification exists in the DOM and is already visible. // If you need to make it flash or something, you can do that here. } </code></pre>
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Guidance
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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