Hi Gao Yixin,

    Yes, of course we are able to do so. Since in our EditingForm.aspx, we are using our component as well and most of them is Webcombo and WebInput. So by simply go to "./WebScheduler/EditingForm.aspx" and create a client side event for a desired component. For example, in these following snippet, I have created an event of OnClick on StartTime WebCombo in EditingForm.aspx.

JavaScript:

        function WS_Onclick(controlId) {
            var WebScheduler1 = ISGetObject(controlId);
            // Do task in here
            return true;
        }

 HTML:

<ClientSideEvents OnClick="WS_Onclick">

      I hope it helps. Thank you and have a nice day.

Best Regards,

Andi Santoso