<script>
//-------------------------------计算报废金额=单价*报废数量-------------------------------------
var i=0;
function startCalc(){
i=event.srcElement.parentElement.parentElement.parentElement.rowIndex;
alert(i)
one=tb.rows[i].cells[2]. outerText;
alert(one);
two=tb.rows[i].cells[5].childNodes[0].childNodes[0].value
alert(two);
tb.rows[i].cells[6].childNodes[0].childNodes[0].value=one*two;
alert(one*two);
}

</script>

            
<table id=tb width="100%" border="1" cellpadding="0" cellspacing="0">
  <tr> 
    <td height="17"><h5 align=center>物资名称</h5></td>
    <td><h5 align=center>物资产地</h5></td>
    <td><h5 align=center>入库单价</h5></td>
    <td><h5 align=center>入库数量</h5></td>
    <td><h5 align=center>库存总数量</h5></td>
    <td><h5 align=center>报废数量</h5></td>
    <td><h5 align=center>报废金额</h5></td>
    <td><h5 align=center>选择</h5></td>
  </tr>
  <tr> 
    <td><h5 align=center>1</h5></td>
    <td><h5 align=center>山东</h5></td>
    <td><h5 align=center>10</h5></td>
    <td><h5 align=center>45</h5></td>
    <td><h5 align=center>21</h5></td>
    <td><h5 align=center> <input type="text" name="text_bfsl" id="bfsl" onkeyup="startCalc();" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/\D/g,''));"></h5></td>
    <td><h5 align=center> 
        <input type="text" name="text_bfje" id="bfje" readonly>
      </h5></td>
    <td><h5 align=center> 
        <input type="checkbox" name="select" value="bfje.value" onclick="CheckChoice(this);">
      </h5></td>
  </tr>
  <tr> 
    <td><h5 align=center>2</h5></td>
    <td><h5 align=center>山东</h5></td>
    <td><h5 align=center>12 </h5></td>
    <td><h5 align=center>89 </h5></td>
    <td><h5 align=center>65</h5></td>
    <td><h5 align=center><input type="text" name="text_bfsl" id="bfsl" onkeyup=";startCalc();" onbeforepaste="clipboardData.setData('text',clipboardData.getData('text').replace(/\D/g,''));"></h5></td>
          <td><h5 align=center><input type="text" name="text_bfje" id="bfje" readonly>  </h5></td>
    <td><h5 align=center><input type="checkbox" name="select" value="bfje.value" onclick="CheckChoice(this);"></h5></td>
  </tr>
</table>