CODEWITHSUNDEEP
javascriptc#htmlasp.net
Michael Eriksen
Michael Eriksen

Reputation: 157

How to find a control via JavaScript and get the ClientID

I have the following aspx code:

<div id="IsAccountingOk" class="modalDialog">
    <div>
        <a href="#close" title="Luk" class="close">X</a><br />
        <asp:Label ID="lblIsAccountingOkHeader" runat="server" Text="Kassekladde:" Font-Size="Large"></asp:Label><br /><br />
        <asp:Label ID="lblMessage" runat="server" Text="Der skal først vælges regnskabsår!"></asp:Label><br />
        <br />
        <asp:Button ID="btnIsAccountingOK" runat="server" Text="Ok" OnClick="btnIsAccountingOK_Click"/>
    </div>
</div>

but how can I access 'IsAccountingOk' and get it via document.getElementByID? I have also tried the following with no success :-(

$(document).ready(function () {
    var session = '<%=Session["AccountYearID"] == null%>';
    if (session.toLowerCase() == 'true') {
        document.getElementById('<%= this.FindControl("IsAccountingOk").ClientID %>').style.display = 'block';
    }
});

The following error has occurred:

System.NullReferenceException: 'Objektreferencen er ikke indstillet til en forekomst af et objekt.' (The error message is in danish - but I got a null value from FindControl)

Any ideas?

Thanks in advance.

Regards Michael

Upvotes: 0

Views: 162

Answers (1)

BroDev
BroDev

Reputation: 590

The div you're targeting isn't a server-side control, so you just use id directly:

document.getElementById('IsAccountingOk').style.display = 'block';

Upvotes: 2

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