在当前屏幕中，我想使用 javascript 进行验证
1.用户不能在RO Qty中输入负值。和
2.RO 数量值应小于发货数量。
对于第一次验证，我编写了 javascript 并在 button 的 keypress 事件中调用它。
function onlyNumeric() {
if (event.keyCode < 48 || event.keyCode > 57) {
alert("Invalid RoQuantity,Quantity should not be negative.");
event.returnValue = false;
}
}
它工作正常，但是当我想在 keyup 和 keydown 中添加更小和更大的验证时，负值验证不起作用。
对于第二次验证，我尝试过这样但没有成功
if (document.getElementById("ROQuantity").value > document.getElementById("shpdqty").innerHTML) {
alert("Please Enter RO Qty, and ROQty shouldnot be greater then shipped quantity.");
return false;
}
这也适用，但仅适用于第一行，因此如何在此处使用 for 循环，以便它适用于所有行。
所以请帮我怎么做。
还有一件事是 ASP CLASSIC 页面。
这是我绑定值的 TR 标签。
<tr valign="top" bgcolor="#E9E9E9">
<td colspan="2" bgcolor="#FFFFFF" scope="col">
<table width="100%" border="0" cellpadding="10" cellspacing="0" bordercolor="#E5E5E5"
id="ctl00_ContentPlaceHolder1_GV">
<tr bgcolor="#333333">
<td scope="col">
<strong><font color="#FFFFFF">No</font></strong>
</td>
<td align="center" scope="col">
<strong><font color="#FFFFFF">Carton</font></strong>
</td>
<td scope="col">
<strong><font color="#FFFFFF">Article Code </font></strong>
</td>
<td align="center" scope="col">
<strong><font color="#FFFFFF">Color</font></strong>
</td>
<td align="center" scope="col">
<strong><font color="#FFFFFF">Size</font></strong>
</td>
<td align="right" scope="col">
<strong><font color="#FFFFFF">Order Qty</font></strong>
</td>
<td align="center" scope="col">
<strong><font color="#FFFFFF">Shipped Qty </font></strong>
</td>
<td align="center" scope="col">
<strong><font color="#FFFFFF">RO Qty</font></strong>
</td>
</tr>
<tbody>
<% i =1
set rs1 = server.CreateObject("adodb.recordset")
sql1 = "SELECT tblOrderAllocationListItems.OItemID, tblOrderAllocationListItems.MALItemID, tblOrderAllocationListItems.OrderNo, " & _
"tblOrderAllocationListItems.MALNo, tblOrderAllocationListItems.CartonName, tblOrderAllocationListItems.ArticleCode, " & _
"tblOrderAllocationListItems.Cup, tblOrderAllocationListItems.ColorID, " & _
"tblOrderAllocationListItems.SizeID, tblOrderAllocationListItems.UOM, tblOrderAllocationListItems.ArticleCostPrice, " & _
"tblOrderAllocationListItems.ArticleRCP, tblOrderAllocationListItems.OrderedQuantity, tblOrderAllocationListItems.ShippedQuantity, tblOrderAllocationListItems.ROQuantity, " & _
"tblArticleImage.ImagePath FROM tblOrderAllocationListItems LEFT OUTER JOIN " & _
"tblArticleImage ON tblOrderAllocationListItems.ArticleCode = tblArticleImage.ArticleCode where tblOrderAllocationListItems.OrderNo = '" & OrderNo & "' order by tblOrderAllocationListItems.CartonName, tblOrderAllocationListItems.ArticleCode"
rs1.Open sql1,strconnect,3,3,&H0001
while Not rs1.EOF
if i mod 2 = 0 then
nbgcolor = "#F3F3F3"
else
nbgcolor = "#FFFFFF"
end if
orderamt = rs1("OrderedQuantity") * rs1("ArticleCostPrice")
shippedamt = rs1("ShippedQuantity") * rs1("ArticleCostPrice")
ShippedVarious = rs1("OrderedQuantity") - rs1("ShippedQuantity")
ROamt = rs1("ROQuantity") * rs1("ArticleCostPrice")
%>
<tr bgcolor="<%=nbgcolor%>">
<td>
<%=i%>
</td>
<td align="center">
<font color="#000000">
<%=rs1("CartonName")%>
</font>
</td>
<td>
<a href="javascript:popup('http://www.anakku.com/v5/products_detail.asp?pro_id=609','photo','scrollbars=yes,resizable=yes,width=400,height=400')">
<font color="#000000">
<%=rs1("ArticleCode")%>
</font></a>
</td>
<td align="center">
<a href="javascript:popup('http://www.anakku.com/v5/products_detail.asp?pro_id=609','photo','scrollbars=yes,resizable=yes,width=400,height=400')">
<font color="#000000">
<%=rs1("ColorID")%>
</font></a>
</td>
<td align="center">
<font color="#000000">
<%=rs1("SizeID") & "/" & rs1("Cup")%>
</font>
</td>
<td align="right" bgcolor="#D9D9FF">
<font color="#000000">
<%=rs1("OrderedQuantity")%>
</font>
</td>
//我想比较这两个TD
<td align="center" bgcolor="#C6FFC6" id="shpdqty">
<%=rs1("ShippedQuantity")%>
</td>
<td align="center" bgcolor="#D5E6FF">
<input name="ROQuantity<%=rs1("OItemID")%>" type="text" value="<%=rs1("ROQuantity")%>"
id="ROQuantity" size="5" onkeypress="onlyNumeric();" />
</td>
</tr>
<%
tOrderedQuantity = tOrderedQuantity + rs1("OrderedQuantity")
tShippedQuantity = tShippedQuantity + rs1("ShippedQuantity")
tShippedvariousQuantity = tShippedvariousQuantity + ShippedVarious
tROQuantity = tROQuantity + rs1("ROQuantity")
tROamt = tROamt + ROamt
i = i + 1
rs1.movenext
wend
rs1.close
set rs1 = nothing
%>
<tr style="color: #333333; background-color: white">
<td colspan="5" align="right">
<strong>Total Qty</strong>
</td>
<td align="right" bgcolor="#AEAEFF">
<strong>
<%=tOrderedQuantity%>
</strong>
</td>
<td align="center" bgcolor="#AAFFAA">
<strong>
<%=tShippedQuantity%>
</strong>
</td>
<td align="center" bgcolor="#AEAEFF">
<font color="#000000">
<%=tROQuantity%>
</font>
</td>
</tr>
</tbody>
</table>
</td>
</tr>