I suggest taking a look at Typescript and learning some popular frontend framework (Angular, React, Vue).
If you are interested in backend, take a look at Node.js.
If you would like to learn a different backend language, start learning Java or C#.
Also you can dive deeper in JS (e.g. learn Promises, read the You Don't Know JS book) if you want, and look at web architecture like REST and stuff.
Take a look at some frontend and backend roadmaps in roadmap.sh to assess your knowledge.
Have fun! :)
EDIT: to let me help you more - what kind of coding work have you been doing so far?
I suggest taking a look at Typescript and learning some popular frontend framework (Angular, React, Vue).
If you are interested in backend, take a look at Node.js.
If you would like to learn a different backend language, start learning Java or C#.
Also you can dive deeper in JS (e.g. learn Promises, read the You Don't Know JS book) if you want, and look at web architecture like REST and stuff.
Take a look at some frontend and backend roadmaps in roadmap.sh to assess your knowledge.
Have fun! :)
EDIT: to let me help you more - what kind of coding work have you been doing so far?
So far in development I have learned HTML, CSS and basic JS with some knowledge of jQuery.
Then the above still holds. :)