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在ASP.net vs 05 C#上工作,有三個textBox.Length,Height,Sft.I要乘以長度*高度並希望將值放在Sft文本上。如何使用JavaScript在文本框中乘和設置乘積值
<asp:TextBox ID="txtLength" runat="server"></asp:TextBox>
<asp:TextBox ID="txtHeight" runat="server" onblar="javascript:ComputeSft();" ></asp:TextBox>
<asp:TextBox ID="txtSft" runat="server"></asp:TextBox></td>
Sft=Length*Height.
function ComputeSft()
{
var _nLength, _nHeight,_nSft;
_nLength=document.getElementById("txtLength").innerText;
_nHeight=document.getElementById("txtHeight").innerText;
_nSft=_nLength*_nHeight;
alert(_nSft);
txtSft.Text=_nSft;
}
如何乘?以及如何設置文本框的乘法值?