- Check that the function exists.
- Check that the function is named correctly.
- Make sure that you’re not using “this” in the call to createDelegate, as detailed here.
I don’t know why this difference should cause this error, but I’ve proved it true.
4 thoughts on “Error: 'b' is null or not an object”
I have also had the error message “Unable to get value of the property ‘apply’: object is null or undefined” which had the same cause.
Thank you so much 🙂 ur post was just the thing i was looking for.. spent two days on this issue..
Totally agree with Anusha, Thanks!!
Thanks a lot . I was facing same issue .
One more thing ,though it has given this error , item was created successfully.