Question

I have a asp link

<asp:LinkButton ID="next" CssClass="Button Large" runat="server" OnClick="Next_Click" OnClientClick="showBillingRequiredState(this)">Next</asp:LinkButton>

When its clicked I want to cancel the page from continue , I want it to just cancel processing if my javascript return false. Right now I am showing an error but then the error dissapears and it doesnt stick.. something is causing it refresh and I lose my error. Here is the javascript, as I mentioned it passes fine through all my conditions and it shows the div, but then after a second it dissapears.

 function showrequired(evt) {
        var code = document.getElementById('<%=codelist.ClientID%>').options[document.getElementById('<%=codelist.ClientID%>').selectedIndex].value;
        var currentValue= document.getElementById('<%=statevalue.ClientID%>').value;
        var eDiv = document.getElementById('reqDiv');

        if (code == "US" && currentValue.trim() == '') {
            eDiv.style.display = 'block';
            return false;
        }
        else {
            eDiv.style.display = 'none';
        }

     }

Answer 1

Try:

 OnClientClick=" return showBillingRequiredState(this)"