Do you get “jQuery is not defined” as an error after a fresh WordPress Install? JavaScript not working at your admin panel? Don’t worry, I have the solution.
After installing two new WordPress installations with defective admin JavaScript that won’t allow me to
- Open the menus (in the admin panel’s left side)
- See the post editors toolbar
- Install new plugins
- Install new themes
I understood I was having some kind problem with the Javascript jQuery library.
I deactivated all the plugins and nothing happened. Then I started looking at the source code and googeling for quite a long time. After some serious research I discovered what caused the issue.
The Problem
While uploading the WordPress installation files onto the server I had some issues that cause some of the JavaScript files to not be uploaded / be corrupted.
The Solution
Re upload the wp-includes\js folder and overwrite whatever is in there.
That’s what fixed it for me.
I hope this helped someone, if it does, or does not – comment to help or get help.
