I am following this blog as it is for adding on key press event on Name field of account but I cannot get the things done but came across with error at onload event.
Additional:
I tried to debug the library but unfortunately it throws exception before reaching to the original code. Also, there is no any other library added to the form.
Update 2:
It is cross checked that it is main form not the mobile or tab form and also it is name field of account which is text field.