The programming language of web browsers, created by Brendan Eich at Netscape in 1995. Most browser-based and on-chain generative art runs in it.
If you're using certain libraries within JavaScript, you have no idea if these libraries are going to be supported in five to 10 years.
Conrad House, One Year of Le Random
GLSL is very challenging and it's something that—at least a couple of years ago—I didn't know nearly as much about compared to more high-level languages like JavaScript or C#, which is what I use at work.
Michael Kozlowski, Michael Kozlowski on Exploration as Practice