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POjQuery if or while loops
 

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    <p>I haven't done much (or any) jQuery. I found the following script on here to, but I have a question. All the attempts I've tried while searching this site have ruined the script. I only want it sum the values of the other columns if the checkbox is checked. </p> <p>Here is an example table:</p> <pre><code>&lt;table id="sum_table" class="example"&gt; &lt;thead&gt; &lt;tr class="titlerow"&gt; &lt;td class="table-sortable:numeric"&gt;Apple&lt;/td&gt; &lt;td class="table-sortable:numeric"&gt;Orange&lt;/td&gt; &lt;td class="table-sortable:numeric"&gt;Watermelon&lt;/td&gt; &lt;td class="table-sortable:numeric"&gt;Turtle&lt;/td&gt; &lt;/tr&gt; &lt;/thead&gt; &lt;tr&gt; &lt;td class="rowDataSd"&gt;52&lt;/td&gt; &lt;td class="rowDataSd"&gt;911&lt;/td&gt; &lt;td class="rowDataSd"&gt;911&lt;/td&gt; &lt;td&gt;&lt;input type="checkbox" name="cb" value="1"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td class="rowDataSd"&gt;989&lt;/td&gt; &lt;td class="rowDataSd"&gt;24&lt;/td&gt; &lt;td class="rowDataSd"&gt;911&lt;/td&gt; &lt;td&gt;&lt;input type="checkbox" name="cb" value="1"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tr&gt; &lt;td class="rowDataSd"&gt;989&lt;/td&gt; &lt;td class="rowDataSd"&gt;911&lt;/td&gt; &lt;td class="rowDataSd"&gt;911&lt;/td&gt; &lt;td&gt;&lt;input type="checkbox" name="cb" value="1"&gt;&lt;/td&gt; &lt;/tr&gt; &lt;tfoot&gt; &lt;tr class="totalColumn"&gt; &lt;td class="totalCol"&gt;Total:&lt;/td&gt; &lt;td class="totalCol"&gt;Total:&lt;/td&gt; &lt;td class="totalCol"&gt;Total:&lt;/td&gt; &lt;td class="totalCol"&gt;Total:&lt;/td&gt; &lt;/tr&gt; &lt;/tfoot&gt; </code></pre> <p>Here's the script:</p> <pre><code>$('#sum_table tr:first td').each(function(){ var $td = $(this); var colTotal = 0; $('#sum_table tr:not(:first,.totalColumn)').each(function(){ colTotal += parseInt($(this).children().eq($td.index()).html(),10); }); $('#sum_table tr.totalColumn').children().eq($td.index()).html('Total: ' + colTotal); }); </code></pre> <p>Where would I put an &amp;&amp;, and what exactly would that &amp;&amp; be?</p> <p>I've tried adding &amp;&amp;s, but I'm just not familiar with how to read jQuery. I'd love to learn it and I thought this would be a simple project. Guess not. As always, any help is greatly appreciated.</p>
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    1. CO`&&` is the JavaScript logical AND operator. https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Logical_Operators
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    2. COjQuery doesn't have if or while loops. Did you mean JavaScript?
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    3. COWhoops sorry. I only said if and while because that's what I assumed it would be called. Regardless, I want the script to only sum those values that contain a checked checkbox.
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