How to program and calculate multiple subtotal and grandtotal using jquery?
- by Victor
I'm stump figuring out how to do this in jquery, I need to do it without any plug-in. Imagine a shopping cart for books, each change of quantity (using select dropdown) will update the total price, grandtotal and then the hidden input value.
<table>
<tr>
<td class="qty">
<select class="item-1">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
...
</select>
</td>
<td class="product">
Book 1
</td>
<td class="price-item-1">
$20
</td>
<td class="total-item-1">
$20
</td>
</tr>
<tr>
<td class="qty">
<select class="item-2">
<option value="1">1</option>
<option value="2">2</option>
<option value="3">3</option>
...
</select>
</td>
<td class="product">
Book 2
</td>
<td class="price-item-2">
$10
</td>
<td class="total-item-2">
$10
</td>
</tr>
...
...
<tr>
<td colspan="3" align="right">
<strong>Grand Total:</strong>
</td>
<td class="grandtotal">
</td>
</tr>
</table>
<input type="hidden" id="qty-item-1" value="0" />
<input type="hidden" id="total-item-1" value="0" />
<input type="hidden" id="qty-item-2" value="0" />
<input type="hidden" id="total-item-2" value="0" />
