UI5 technologies

Hi ,

I am   new to the UI5. I am planing to learn. If I am not wrong , Is these below technologies are involved in UI5.

1. JQuery
2. CSS
3. Java Script
4. Ajax
5. HTML5

As ABAP consultant I have 10+ years experience , If I want to learn UI5 Is it necessary to learn all above?

Please help me

Regards,