Using API canvas HTML

[batistacaceres]

And what is the result of below line?

Code:

console.log(ctx);

All should work, but you must be sure if canvas is already created. You can add some background in css to it.

The result in console.log(ctx) is NULL ...

And.. How can add some background in css ???

I just add a frame element in LM, and put in parameter "Additional classes" : icanvas3.

but seem it doesnt work as canvas, any suggestion??

best regards