jQuery UI: TypeError: $(…).accordion is not a function

Question

For some reason the jQuery UI Accordion does not work. I keep getting this error:

TypeError: $(...).accordion is not a function

Answer 1

This problem could arise from a couple of different things:

• You are not including jQuery UI library.
• You are including jQuery UI library above the inclusion of jQuery library
• The path to jQuery UI and jQuery libraries might be incorrect
• You are using a custom jQuery UI library that does not have an accordion

Since the first two do not apply to you, I would recommend triple-checking the path and using a full jQuery UI library instead of the custom one: