Are there any good resources or tutorials on writing post processing fx with javascript?

I was looking at the camera fx scripts that unity has. I don't think any of them used shaders and a lot were written in javascript (which i prefer) I looked through the scripts and saw a lot of stuff I didn't recognise. Seems like it could be a good learning experience. I couldn't find any tutorials or learning resources besides the tutorials for beginners that show them how to apply the scripts.

 

Just saw that about all of the effects use shaders! The question still stands, how can I learn to write camera effects in javascript (if its possible, which I'd think it would)

 

Here's a guide to learn shaders : http://unitygems.com/noobshader1/

Or check out the ShaderLab section of the forums, or the Unity Wiki : http://wiki.unity3d.com/index.php/Shaders

What camera effects? This is a really vague question.

 

Idk what kind of effects. Just something really simple. I'd prefer not to have to write shaders cuz I'm terrible at it and can't really get into it. Anything that'll give me a start