How can I recall a javascript function after updatepanel update

<asp:UpdatePanel ID="UpdatePanel2" runat="server"
    OnLoad="UpdatePanel2_Load" UpdateMode="Conditional">
    <ContentTemplate>
        <script type="text/javascript">
            myFunction();
        </script>
        <asp:Label ID="Label1" runat="server" Text="1" Width="18px"></asp:Label>
    </ContentTemplate>
</asp:UpdatePanel>

C#:

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if(condition)
{
      UpdatePanel2.Update();
}
protected void UpdatePanel2_Load(object sender, EventArgs e)
{
        Label1.Text += 1;
}

the Label1's value is changing but it doesn't call myFunction(). I want to call it one more time after the some condition but not using setTimeout to auto call, some ideas?

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When the UpdatePanel updates the DOM and rewrites script blocks into the DOM, they are not re-executed. You need to get on the client-side event that fires after the UpdatePanel is finished and re-execute your JS blocks:

<script type="text/javascript">
    function handleEndRequest(sender, args)
    {
        var panel = document.getElementById(sender._postBackSettings.panelID);
        var scripts = panel.getElementsByTagName('script');
        for(var i=0;i<scripts.length;i++) {
            eval(scripts[i].innerHTML);
        }
    }

    Sys.WebForms.PageRequestManager.getInstance().add_endRequest(handleEndRequest);
</script>

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I have made it works by refreshing the whole page