Question

我在表格中有发票表格。我想在字段中添加数量时计算每个项目的总数。我列出的项目数量为空但具有项目的数量。我想只在我向现场添加数量时得到总数。目前我已经能够计算没有数量的总数。请使用此链接enter link description here

$dbServer = $OctopusParameters["DBServer"]
$dbUser = $OctopusParameters["DBUser"]
$dbPass = $OctopusParameters["DBPass"]

Write-Host ("Running migration " + $dbServer)

$CMD = ".\Resources\migrate.exe"
$arg1 = '--assembly "Database\bin\Debug\Database.dll" --provider sqlserver2014'
$arg2 = '--connection "data source=$dbServer;initial catalog=MyDB;user id=$dbUser;password=$dbPass;persist security info=true;MultipleActiveResultSets=True" -o'

& $CMD $arg1 $arg2

Write-host("Migration finished " + $dbServer)

Answer 1

以下代码将添加在标记为＆＃34; Total＆＃34;的只读输入字段中显示数量*金额的总和。注意：通常class应该用于多个元素，id应该对每个元素都是唯一的。如果您希望金额也是只读字段，只需在定义的值之后立即添加关键字readonly。我使用onBlur代替onFocus来允许用户在值发生变化之前对其进行编辑。

＆＃13;

function findTotal(){
        var arr = document.getElementsByName('qty');
        var scale = document.getElementsByName('num');
        var tot = 0;
        for(var i=0;i<arr.length;i++){
            if(arr[i].value != "" && scale[i].value != ""){
                tot += parseInt(scale[i].value) * parseInt(arr[i].value);
            
            }
        }
        document.getElementById('total').value = tot;
}

＆＃13;

<table width="82%" class='table borderless'>

      <tr>
        <td>ITEM</td>
        <td>Quantity</td>
        <td>Amount</td>
      </tr>
       <tr>
        <td width="15%">Saddle (75mm x 3/4) : </td>
        <td width="11%">

          <input value = 0 type="text" onBlur="findTotal()" name="num">             </td>
        <td ><input   onBlur()="findTotal()" type="text" name="qty" value="55"/></td>
      </tr> <tr>
        <td width="15%">Ferrule (19mm) : </td>
        <td width="11%">

          <input value = 0 type="text" onBlur="findTotal()" name="num">             </td>
        <td ><input   onBlur="findTotal()" type="text" name="qty" value="60"/></td>
      </tr> <tr>
        <td width="15%">HDPE Pipe (25mm) : </td>
        <td width="11%">

          <input value = 0 type="text" onBlur="findTotal()" name="num">             </td>
        <td ><input   onBlur="findTotal()" type="text" name="qty" value="4.5"/></td>
      </tr> <tr>
        <td width="15%">Stopcock (19mm) : </td>
        <td width="11%">

          <input type="text" name="num" value = 0 onBlur="findTotal()">             </td>
        <td ><input   onBlur="findTotal()" type="text" name="qty" value="45"/></td>
      </tr>
      <tr>
          <td>Total: </td>
          <td><input type="text" id='total' value=""readonly></input></td>
      </tr>
    </table>
     <button type="submit" name="process" class="btn btn-primary" id="submit" onclick="findTotal()">Submit Estimate</button>

＆＃13;

如何计算javascript中数量输入字段的价格总和

1 个答案: