Teachers, js, link database mysql, keeps reporting errors, how to solve it!

Question

I have introduced the jquery library file, but it has no effect. This error keeps showing up. How can I solve this? Masters.

iEfoam · Answer

This thing seems to be executed through node lojkas.js and cannot be accessed with a browser. The relevant background logic is in the background and is invisible to the front-end web browser

autoload · Answer

Are you using node.js to connect to the database?