JavaScrpit is compartible with Stencyl?

Good day everyone:
I´m learning too many new things about stencyl right now, one is the posibility to put your own code than use the default logic squares. Is JavaScrpit compartible to use as code?

Hi there, as I mentioned on Facebook:

You can use ActionScript 3 for Flash, which is very similar to JavaScript. In 3.0, we support Haxe, which also is similar to JavaScript and compiles down to JavaScript for the HTML5 target.