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POjQuery selector: delegate click event to only tr elements with specific data
 

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  1. POjQuery selector: delegate click event to only tr elements with specific data
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    <p>I'm trying to delegate a click event to a TR element that contains a TD with a specific attribute, i.e.</p> <pre><code>&lt;table&gt; &lt;tr&gt; &lt;td&gt;product one&lt;/td&gt; &lt;td&gt;price&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td data-imgurl="images/p2.png"&gt;product two&lt;/td&gt; &lt;td&gt;price&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>The goal is to click on the row and retrieve that row's TD "data-imgurl" attribute value, i.e. the URI for an image. This is just a test to retrieve that value. Ultimately I'd want to have the click handler show the image in a hidden DIV or maybe lightbox, not sure what I want to do yet.</p> <p>My selector (that works only in that it will assign a click to the actual TD element:</p> <pre><code>$("table").delegate("tr td[data-imgurl]", "click", function(evt){ alert( $(this).attr("data-imgurl") ); }); </code></pre> <p>Note, the data is created dynamically from a server-side script, and the "data-imgurl" attribute is based on logic in that script, so that only products that actually have images are assigned a "data-imgurl" attribute. Perhaps I'm looking at it all wrong, and should somehow attach the data to the row itself, but that is counter-intuitive.</p> <p>Or maybe I should be actually pushing the image into a hidden TD and assigning it a class or rel attribute? So it exists on the page but then a click reveals it? The idea still being that only those products with actual images can be clickable.</p> <p><strong>EDIT</strong> Ok, I resolved this by pushing the data into the actual row itself. Makes more sense that way, each row is a record. Solution:</p> <pre><code>&lt;table&gt; &lt;tr&gt; &lt;td&gt;product one&lt;/td&gt; &lt;td&gt;price&lt;/td&gt; &lt;/tr&gt; &lt;tr data-imgurl="images/p2.png"&gt; &lt;td&gt;product two&lt;/td&gt; &lt;td&gt;price&lt;/td&gt; &lt;/tr&gt; &lt;/table&gt; </code></pre> <p>And the jQuery</p> <pre><code>$("table").delegate("tr[data-imgurl]", "click", function(evt){ alert( $(this).attr("data-imgurl") ); }); </code></pre>
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