I'd encourage you to reconsider that. Using WebGL lets you skip over a lot of tedious initialization. Or, even better, using a platform like shadertoy.net lets

I'd encourage you to reconsider that. Using WebGL lets you skip over a lot of tedious initialization. Or, even better, using a platform like shadertoy.net lets you skip all the JS as well and just write shaders. Using these tools doesn't mean your final project has to be JS-based as well. It just happens to be a convenient way to focus on specific aspects of the project.