Hi @misolietavec! Thanks for opening this issue. Porting the examples to pyodide is something that I wanted to do for a while but didn't have time. If you're ok with that, feel free to open a PR with the new examples. I'll only ask you to organize it in a way we have 2 final working versions: one for transcrypt and another for pyodide. We could structure it as docs/examples/transcrypt and docs/examples/pyodide, what do you think?

Anyway, this issue with the sketch_010 is something to review, for sure.

@berinhard , thanks for comment. I think, the subdirectories in /docs/examples are OK. For now, I can make PR for pyodide versions of sketch_000 - sketch_009.

As I wrote in first comment, there are error messages from browser Javascript console if using mouse event functions (e.g. mousePressed) with canvas elements (eg. buttons, even with canvas itself). What works for now is to define event function "globally" and check manually if mouse position is inside element, as in following code:

val = 0
b_width = 100
b_height = 30

def setup():
    createCanvas(b_width, 100)
    background(0)
    button = createButton('Click')
    button.position(0, 0)
    button.size(b_width,b_height)

def inButton(x,y):
    return (0 < x < b_width) and (0 < y < b_height)
    
def mousePressed():
    global val
    x, y = mouseX, mouseY
    if inButton(x,y):
        val = random(255)
        background(val)

def draw():
    pass

@berinhard, hope this will help with debugging :-)

Using the (not so clever) strategy from previous comment I was able to compile sketch_010 with pyodide. See PR #167.