Need help setting text prop of label (in a content page) in jQuery

Question

I have searched already but unable to find an answer that works. I simply want to set the text of a label that is in a content page. Obviously because the control is in a content page it has the modified client id. So I know simply ".labelName" will not work alone because the client id is for example "ctl00_ContentPlaceHolder1_labelName".

So what is the syntax to use when the control is in a content page?

Here's what I have that is not working:

function intervalTypeChanged(sender, eventArgs) {

            var item = eventArgs.get_item();
            var itemText = item.get_text();
            if (itemText == "Seconds" || itemText == "Minutes" || itemText == "Hours") {
                $("#trSimpleScheduleSettings").show();                    
                $("#<%=lblSimpleDurationValueAfter.ClientID %>").text = itemText;
            }
            else {
                $("#trSimpleScheduleSettings").hide();
            }
        }

The table row trSimpleScheduleSettings appears but there is no text in the label.

Answer 1

.text()

$("#<%=lblSimpleDurationValueAfter.ClientID %>").text(itemText);

Answer 2

Apart from the plain text if you want to set the content of the label in the form of html like

 <b>Some Value</b>

In that case you can use

$("#<%=lblSimpleDurationValueAfter.ClientID %>").html(itemText);