ASP,如何用后台获取前台JS的返回值

Question

添加个隐藏控件 然后把a值赋给隐藏控件 然后获取隐藏控件的值

Answer 1

    <script>
        function test() {
            document.getElementById("HiddenField1").value = "滚";
        }
    </script>
    <asp:HiddenField ID="HiddenField1" runat="server" />
<asp:Button ID="Button1" runat="server" Text="Button" OnClientClick="test()" OnClick="Button1_Click" />--后台
    protected void Button1_Click(object sender, EventArgs e)
    {
        Response.Write(HiddenField1.Value);
    }