activate a specific tab within a tab container using JavaScript

Having an issue with the JavaScript function below that I am using to set active ASP.NET tabs. Whenever I run the code, it always returns CurrentTab as "null". Can anyone help me solve this problem?

function SetActiveTab2(tabNumber) {
            try {
                var CurrentTab = $find('<%#cust_tab.ClientID%>');
                var CurrentTab = document.getElementById('<%=cust_tab.ClientID%>');
                //The second line is giving me an error that says The Controls collection cannot be modified because the control contains code blocks (i.e. <% ... %>).

                CurrentTab.set_activeTabIndex(parseInt(tabNumber));
            }
            catch (e) {
                alert('An error has occurred: ' + e.message)
                return false;
            }
        }

Answer №1

To enhance the code, remove the following line:

var CurrentTab = document.getElementById('<%=cust_tab.ClientID%>');
and replace it with:
var CurrentTab = $find('<%= cust_tab.ClientID %>');

Answer №2

If you're looking to select an element based on its id, remember to include the # symbol at the beginning.

var ActiveID = document.getElementById('#<%=active_element.ClientID%>');

This approach may provide the answer you're seeking.

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