To become an Web Frontend Developer in 2023 you need to know the following skills.
Basic Skills​
If you decide to become an web developer. Then you should have understanding of the following technologies.
- HTML: HyperText Markup Language | MDN
- CSS: Cascading Style Sheets | MDN
- JavaScript | MDN
Advanced Skills​
Specialize any one of the UI Frameworks
- React
- Angular
- Vue
I prefer to go with React.