I am taking a JavaScript (JS) class on Kahn Academy. Once I complete the class, I would like to practice coding on my own computer. . . that is, writing code and being able to test it locally. I'm told that JS is included in the FireFox browser and I've checked and verified that it is enabled in the "about:config" application. My question is, how do I access the actual JS program. Where is it? How do I access it? What commands do I use to get into the program so that I can start writing, and testing my code? Your help is greatly appreciated. Thank you.