Please!!! Help me!

Question

Look at my code named "Platform Game". It draws nothing on canvas and shows error. Pls help!

Answer 1

you have not defined ctx

Answer 2

the error occours because you defined de ctx locally on window.onload. get the context globally, out of the function, like so:

var can = document.createElement("canvas");
var ctx = can.getContext("2d");
window.onload = function(){

can.width = window.innerWidth;

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