javascript - 需要每行总值并且应显示在行末尾

Question

我想在每行的末尾显示每行的总值...所有记录都是从数据库中获取的，但是如何计算每行的总值以及如何在每行的末尾显示它？请帮忙。

<table class="rwd-table ui form" id="myTable">
      
 
 <thead>
  <tr>
    <th width="50%">DATE</th>
    <th>TARGET DAILY CONSUMPTION MMBTU</th>
    <th>CONSUMPTION FROM 00H TO 12H IN MMSCF</th>
    <th>CONSUMPTION FROM 12H TO 24H IN MMSCF</th> 
    <th>CONSUMPTION PER RAK GAS IN MMBTU</th>
    <th>REASON OF VARIATION OF CONSUMPTION BETWEEN ACTUAL & TARGET</th>
  </tr>
 </thead>
 <tbody>
    <?php foreach ($view as $report) {?>
    <tr style="color: #000000;">
    <td><?php echo $report['date'];?></td>
    <td><?php echo $report['Target Daily Consumption in MMBTU'];?></td>
    <td><?php echo $report['Consumption From 00h to 12h in MMSCF'];?></td>
    <td><?php echo $report['Consumption From 12h to 24h in MMSCF'];?></td>
    <td><?php echo $report['Consumption As Per RAK Gas in MMBTU'];?></td>
    <td><?php echo $report['Reason of Variation of Consumption Between ACTUAL & TARGET'];?></td> 
  </tr>
    <?php }?>
    </tbody>
</table>

Answer 1

您可以简单地在循环之前添加一个变量，例如:

$tot = 0;

然后在 sum_total 计算之后添加:

$tot += $sum_total;

我还会对 sum_total 做一些更改(如果您使用整数):

$sum_total = intval( $row['stock_count'] ) * intval( $row['stock_price'] );

或者(如果您使用 float ):

$sum_total = floatval( $row['stock_count'] ) * floatval( $row['stock_price'] );

还有:

echo number_format( $sum_total, 2 );

您可以打印保留 2 位小数的 float 。