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POhow to perform calculations on dynamically added table rows in jquery
 

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  1. POhow to perform calculations on dynamically added table rows in jquery
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    <p>hi have a form which dynamically adds a table row on a button click but now i want to perform calculations into my table's columns like i have a colum name prevqty, thisqty, qty(which is total qty), rate and amount and i have a total field in which the total of amount is stored i have tried a calculation but it doesnt seems to work</p> <p>here is my script</p> <pre><code> $(document).ready(function() { var currentItem = $('#items').val(); $('#data').on('keyup', '.prevqty, .thisqty, .qty, .rate, .cal', calculateRow); $('#addnew').click(function() { currentItem++; $('#items').val(currentItem); $('#data').append('&lt;tr&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="6" maxlength="6" name="ord_' + currentItem + '" class="form-input-oth" onkeyup="return copy(this.val());"/&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="6" maxlength="6" name="srno_' + currentItem + '" class="form-input-oth"/&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;textarea name="descrip_' + currentItem + '" cols="70" class="form-input-textareasm"&gt;&lt;/textarea&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="9" maxlength="6" name="unit_' + currentItem + '" class="form-input-rate"/&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="9" maxlength="6" name="prevqty_' + currentItem + '" class="prevqty form-input-rate" onkeyup="calculateRow();"//&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="9" maxlength="6" name="thisqty_' + currentItem + '" class="thisqty form-input-rate" onkeyup="calculateRow();"//&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="9" maxlength="6" name="qty_' + currentItem + '" class="qty form-input-rate" onkeyup="calculateRow();"/&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="9" maxlength="6" name="rate_' + currentItem + '" class="rate form-input-rate" onkeyup="calculateRow();"/&gt;&lt;/td&gt;\n\ &lt;td align="center"&gt;&lt;input type="text" size="6" maxlength="9" maxlength="6" name="amt_' + currentItem + '" class="cal form-input-amt" onkeyup="calculateRow();"/&gt;&lt;/td&gt;\n\ &lt;/tr&gt;' ); }); function calculateSum() { var sum = 0; $(".cal").each(function () { if (!isNaN(this.value) &amp;&amp; this.value.length != 0) { sum += parseFloat(this.value); } }); $("#total").val(sum.toFixed(2)); } function calculateRow() { var cost = 0; var $row = $(this).closest("tr"); var prevqty = parseFloat($row.find('.prevqty').val()); var thisqty = parseFloat($row.find('.thisqty').val()); var qty = parseFloat($row.find('.qty').val(prevqty + thisqty)); //parseFloat($row.find('.qty').val()); alert(qty); if (isNaN(qty)) { $row.find('.qty').val("0"); } else { $row.find('.qty').val(qty); } // changed the following line to only look within the current row var rate = parseFloat($row.find('.rate').val()); cost = qty * rate; if (isNaN(cost)) { $row.find('.cal').val("0"); } else { $row.find('.cal').val(cost); } calculateSum(); }}); </code></pre> <p>i have a working fiddle here the prevqty and thisqty is working properly but the rate and amounts calculation is not working see here <a href="http://jsfiddle.net/rey_kahn/YS4N2/" rel="nofollow">http://jsfiddle.net/rey_kahn/YS4N2/</a></p>
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