前两个文本框的值相乘,等于第三个文本框的值
想实现前两个文本框的值相乘,等于第三个文本框的值。请大家帮忙看一下,多谢
<TABLE bgcolor=#bfbfbf width="242">
<tr bgColor=#bfbfbf> <td width="48">数量</td><td >单价</td><td width="84">金额</td>
</tr>
</TABLE>
<table bgColor=#bfbfbf width="242">
<% for i=0 to 7 %>
<tr>
<td >
<input type="text" name="kcsl" id="kcsl<%=i%>" size="6" ></td>
<td >
<input type="text" name="bhsdj" id="bhsdj<%=i%>" size="12" onchange="get(<%=i%>)">
</td>
<td>
<input type="text" name="bhsjer" id="bhsjer<%=i%>" size="12" ></td>
</tr>
<% next %>
</table>
<script language="javascript ">
function get(h){
b=document.getElementById("kcsl" + h).value*document.getElementById("bhsdj" + h).value;
document.getElementById("bhsjer" + h).value=Math.round(b*10000)/10000;
}
</script>