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POJavascript modify parameters of an element's event function
 

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    <p>Im wondering if there is a more elegant means of modifying the parameter of an onclick event. I have a table that I am dynamically adding/removing elements from and I reindex the rows. Each row has a <code>delete</code> link that has the row's index (and a <code>duplicate</code> link) that needs to update its parameter to match the modified row id. </p> <p>Currently my code looks like (simplified)</p> <pre><code>&lt;a onclick="delRow(1)"&gt;delete&lt;/a&gt; </code></pre> <p>and the javascript: ...</p> <pre><code>html = element.innerHTML; html = html.replace(/dupRow(\\d+)/g, "dupRow(" + newIndex + ")"); html = html.replace(/delRow(\\d+)/g, "delRow(" + newIndex + ")"); element.innerHTML = html </code></pre> <p>and I would like it to become something along the lines of</p> <pre><code>if (element.onclick != null) { element.onclick.params[0] = newIndex; } </code></pre> <p>Any such way of accomplishing this? I also have jQuery if this helps. Thanks!</p> <p><strong>Updates:</strong></p> <p>So thanks to the glorious help of @rich.okelly I have solved my issue</p> <pre><code>&lt;script&gt; ... var newRow = '\ &lt;tr&gt;\ &lt;td class="index" col="0"&gt;0&lt;/td&gt;\ &lt;td&gt;this is content...&lt;/td&gt;\ &lt;td&gt;&lt;a href="#" row-delete="true"&gt;Del&lt;/a&gt;&lt;/td&gt;\ &lt;/tr&gt;'; // re-index table indices in a non-efficient manner function reIndexTable() { $("#rpc-builder-table").find('.index').each(function (i) { $(this).html(i) }) } // add row function addRow() { for (i = 0; i &lt; $('#addRowCount').attr("value"); i++) { $("#rpc-builder-table").append(newRow); } reIndexTable(); } $(document).ready(function () { // add row button $('#addRowsButton').on('click', function () { addRow(); }); // delete row $('#rpc-builder-table').on('click', 'td a[row-delete="true"]', function () { $(this).closest('tr').remove(); reIndexTable(); }); ... } &lt;/script&gt; ... &lt;div&gt; &lt;label&gt;Rows to add: &lt;/label&gt; &lt;input id="addRowCount" value="1" size="2" /&gt; &lt;button id="addRowsButton"&gt;Add Row(s)&lt;/button&gt; &lt;/div&gt; &lt;div&gt;&lt;table id="rpc-builder-table"&gt;&lt;tbody&gt; &lt;tr&gt; &lt;th&gt;Idx &lt;/th&gt; &lt;th&gt;Some content (1)&lt;/td&gt; &lt;/tr&gt; &lt;/tbody&gt;&lt;/table&gt;&lt;/div&gt; ... </code></pre> <p>I used the <code>.on()</code> function instead of the suggested <code>.delegate()</code> function since it is deprecated. Solution works well - hope it helps someone :)</p>
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    1. USScott Tomaszewski
    1. USScott Tomaszewski
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    1. COYour going about this in the wrong way. Consider using reference to the object clicked `this` in your function. In the end the reference to the delete link should allow you to find the row that needs to be deleted. Now you will not need the parameter.
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      1. USJohn Hartsock
 

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