<%@ Page Language="C#" AutoEventWireup="true" CodeFile="Default.aspx.cs" Inherits="_Default" %>
<!DOCTYPE html>
<html xmlns="
http://www.w3.org/1999/xhtml">
<head runat="server">
<script language="javascript" type="text/javascript">
function keyup() {
var span = document.getElementById('TXT');
val = span.value;
la.innerHTML = val;
}
</script>
<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div>
<asp:TextBox runat="server" AutoPostBack="true" ID="TXT" onkeyup="keyup()"></asp:TextBox>
<asp:Label runat="server" ID="la"></asp:Label>
</div>
</form>
</body>
</html>
追问我得最终效果是要调用方法去判断,在前端里能执行吗?假如说我输入12,出现a,输入34,出现b,在这个里面能调用后台方法吗
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