Research about what programming language to make in the visual session

At first, I was thinking about using the After effect to make an animation but making it as a whole video cannot help me to play it live. I need to use a programming language to render the animation. So I used processing at first, but then I realizing that there is a limited function I could used to program as my mac is upgrade into Mojave system. Therefore, I switch to using P5.Js.