页面文件：
<html ><head runat="server"> <title>无标题页</title> <link href=KMessageBox.css rel=stylesheet />
<script language=javascript>
function test()
{
alert('你点击了按钮！');
}
</script> </head><body> <form id="form1" runat="server"> <atlas:ScriptManager ID="ScriptManager1" runat="server" EnablePartialRendering=true > </atlas:ScriptManager> <atlas:UpdatePanel ID="UpdatePanel1" runat="server" Mode=Always > <Triggers > <atlas:ControlEventTrigger ControlID="Button1" EventName="Click" /> </Triggers> <ContentTemplate > <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox> </ContentTemplate> </atlas:UpdatePanel> <asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="点击" /> </form></body></html>后台启动脚本的事件：
protected void Button1_Click(object sender, EventArgs e) { TextBox1.Text = "你点击了按钮!"; ClientScript.RegisterStartupScript(this.GetType(), "test", "<script>test();</script>"); }把 ClientScript.RegisterStartupScript(this.GetType(), "test", "test()",true);
发现不行，它弹出的是 Unknown error
再把
<script language=javascript> function test() { alert('你点击了按钮！'); } </script>移出到Head外面，可以了呵呵！