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copied!<p>Ok I think the question is too vague to be answered completely if you think about.</p> <blockquote> <p>Where are the contents of the new columns, and rows, coming from? What structure do you have? What've you tried already? What didn't work? <sup><a href="https://stackoverflow.com/users/82548/david-thomas">David Thomas</a> comment.</sup></p> </blockquote> <p>If you don't want to use a jQuery plugin like <a href="http://www.jankoatwarpspeed.com/examples/expandable-rows/" rel="nofollow noreferrer">this one</a> it means you will have to do it yourself and a) nobody here will do it for you completely b) much less without any information, that would just be guessing.</p> <p>That said here is a quick and dirty example of what your approach should be like.</p> <p>HTML</p> <pre><code><table border="1"> <tr class="clickable"> <td colspan="2">Click to toggle Next</td> </tr> <tr> <td>Test</td> <td>Test 2</td> </tr> <tr class="clickable"> <td colspan="2">Click to toggle Next</td> </tr> <tr> <td>Test</td> <td>Test 2</td> </tr> <tr class="clickable"> <td colspan="2">Click to toggle Next</td> </tr> <tr> <td>Test</td> <td>Test 2</td> </tr> </table> </code></pre> <p>jQuery</p> <pre><code>$(".clickable").click(function() { $(this).next().toggle(); }); </code></pre> <p>As I said it's <strong>just an example</strong>, it's not scalable (doesn't even support hiding two rows) you can see a <a href="http://jsfiddle.net/Trufa/hr2HA/3/" rel="nofollow noreferrer">demo here</a>.</p> <p>I can update the answer with a better more personalized answer if you update your question.</p> <p>But if you want to build it yourself, this are some of this could come in handy:</p> <p><a href="http://api.jquery.com/show/" rel="nofollow noreferrer">.show()</a><br /> <a href="http://api.jquery.com/hide/" rel="nofollow noreferrer">.hide()</a><br /> <a href="http://api.jquery.com/toggle/" rel="nofollow noreferrer">.toggle()</a><br /> <a href="http://api.jquery.com/animate/" rel="nofollow noreferrer">.animate()</a><br /> <a href="http://api.jquery.com/nth-child-selector/" rel="nofollow noreferrer">:nth-child</a><br /> <a href="http://api.jquery.com/children/" rel="nofollow noreferrer">.children()</a></p> <p>And many other depending on your approach.</p> <p>Good luck!</p>

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