Adding Javascript Confirm Dialog to LinkButton/Form generates Object Expected error

Question

I am attempting to add a javascript confirm dialog to either my linkbutton onclick event or my form onsubmit event.

Neither of them work as I receive an 'object expected' error from the browser.

frm.Attributes.Add("onsubmit", "return Confirm('Really do this?')")

How do I add a confirm dialog to the 'onsubmit' or 'onclick' events without generating an 'object expected' error?

Answer 1

confirm method should be all lowercase letters

Ex

confirm('Really do this?')