我希望使用HTML5的
代码:
<canvas>
元素编写一个贪吃蛇游戏演示。我尝试注册键盘(onkeydown)事件,但它没有起作用。代码:
canvas.onkeydown = divertDirection; //don't work
//canvas.addEventListener("keydown", divertDirection, false); //don't work
//根据键盘来调振蛇移动的方向
function divertDirection(ev) {
console.log(ev);
}
//register this event for widnow
window.addEventListener("keydown", divertDirection, false); //ok