看大家的回答改了代码，还是相同的报错。。一脸懵逼

Question

var can1;var can2;var ctx1;var ctx2;var lastTime;var deltaTime;document.body.onload = game;function game(){ init(); gameloop();}function init(){ can1 = document.getElementById("canvas1"); ctx1 = can1.getContext('2d'); can2 = document.getElementById("canvas2"); ctx2 = can2.getContext();}function gameloop(){ window.requestAnimFrame(gameloop);}

Answer 1

两个都改成getContext("2d")

can1 = document.getElementById("canvas1");

ctx1 = can1.getContext("2d");

can2 = document.getElementById("canvas2");

ctx2 = can2.getContext("2d");