我的jquery / code中存在一个问题,即使用我的jquery代码捕获的id是一个数组。
这是代码段。 这是我的jquery。
<script type="text/JavaScript">
$(document).ready(function()
{
$('input').keyup(function()
{
$('.total_fabi').each(function() {
var answer = parseFloat($('.req').val()) * parseInt($('.was_perc').val());
$('.total_fabi').html(answer);
});
});
});
这是html生成的代码。
<table align='center' width='100%' border='1'>
<thead style='background-color: #900; color: #FFF;'>
<th>Description</th>
<th>Estimated Cost</th>
<th>Req'd Qty</th>
<th>Wastage %</th>
<th>Total</th>
</thead>
<tbody>
<!-- This values are SQL generated inside While.. -->
<!-- Values generated by sql are under Description, Estimated Cost, Wastage-->
<!-- i Need to calculate the total using keyup by multiplying req'd qty * wastage% -->
<tr bgcolor='#FFF'>
<td>FABRICATION PER LM</td>
<td align='center'>200</td>
<td align='center'><input type='text' size='3' name='req[]' class='req'></td>
<td align='center'><input type='hidden' name='was_perc[]' value='7' class='was_perc'>7</td>
<td align='right'>
<font color='#900'>
<span id='total_fabi'>0</span>
<input type='hidden' name='total_fabi' id='total_fabi' style='border: none;' size='6' readonly='readonly'>
</font>
</td>
</tr>
<tr bgcolor='#E3E4FA'>
<td>INSTALLATION PER LM</td>
<td align='center'>200</td>
<td align='center'><input type='text' size='3' name='req[]' class='req'></td>
<td align='center'><input type='hidden' name='was_perc[]' value='15' class='was_perc'>15</td>
<td align='right'>
<font color='#900'>
<span class='total_fabi'>0</span>
<input type='hidden' name='total_fabi' id='total_fabi' style='border: none;' size='6' readonly='readonly'>
</font>
</td>
</tr>
<!-- Here's the while Ends..--->
<tr>
<td colspan='4' align='right'>Total Fabrication & Installation</td>
<td align='right'>
<!-- This part where $total+=$total_fabi -->
</td>
</tr>
</tbody>
</table>
这是实际的PHP代码。
<table align='center' width='100%' border='1'>
<thead style='background-color: #900; color: #FFF;'>
<th>Description</th>
<th>Estimated Cost</th>
<th>Req'd Qty</th>
<th>Wastage %</th>
<th>Total</th>
</thead>
<tbody>
<?php
$total_non = 0;
$sel_fabi = mysql_query("SELECT * FROM tbllabor") or die (mysql_error());
while($non = mysql_fetch_array($sel_fabi)){
$desc_fabi = $non['desc'];
$est_cost = $non['est_cost'];
$was_perc = $non['wastage_perc'];
$was_perc = $was_perc * 100;
//$total_fabi = $req * $was_perc;
echo "<tr bgcolor='".$colors[$c++ % 2]."'>";
echo " <td>$desc_fabi</td>
<td align='center'>$est_cost</td>
<td align='center'><input type='text' size='3' name='req[]' class='req'></td>
<td align='center'><input type='hidden' name='was_perc[]' value='$was_perc' class='was_perc'>$was_perc</td>
<td align='right'>
<font color='#900'>
<span class='total_fabi'>0</span>
<input type='hidden' name='total_fabi' id='total_fabi' style='border: none;' size='6' readonly='readonly'>
</font>
</td>";
echo "</tr>";
}
?>
<tr>
<td colspan='4' align='right'>Total Fabrication & Installation</td>
<td align='right'>
<input type='hidden' value='<?php echo $total_non;?>'>
<?php echo $total_non;?>
</td>
</tr>
</tbody>
</table>
.each()函数不能与我合作。我说过这种代码。你有任何其他选择,我应该使用keyup或keydown计算我需要的总数..提前谢谢..
答案 0 :(得分:2)
id
值must be unique on the page,您不能拥有多个具有相同id
的元素。这是根本问题。
您可以改为将id
值更改为class
值。
很难准确说出您要尝试做什么,但如果目标是每次total_fabi
或req
元素更改时更新同一行中的was_perc
元素:
$(document).ready(function()
{
$('input').keyup(function()
{
// Find the row (if any) containing this input
var $tr = $(this).closest("tr");
// Find the .req, .was_perc, and .total_fabi elements *within* this row
var $req = $tr.find(".req");
var $was_perc = $tr.find(".was_perc");
var $total_fabi = $tr.find(".total_fabi");
// Do the update (probably better to use `text` than `html`)
$total_fabi.text(parseFloat($req.val()) * parseInt($was_perc.val()));
});
});
重新评论以下内容:
先生,我如何得到$ total_fabi为我的总计生成的总计算量?在php中它就像$ total + = $ total_fabi ..我怎么能在jquery中做到这一点?
您可以使用each
:
var total = 0;
$(".total_fabi").each(function() {
total += parseFloat($(this).text());
});
答案 1 :(得分:0)
首先,您需要知道ID
属性必须为unique
并且您多次定义相同的ID。
您可以使用class
代替ID
属性。