document.onkeydown = function(eve){ //设置鼠标移动事件和键盘事件
var e = eve || window.event;
var code = e.keyCode || e.which;
switch(code){ //最后用switch判断
case 37:
// 设置left = 获取当前 - 10
obox.style.left = obox.offsetLeft-10 + "px";break; //左
case 38:
obox.style.top = obox.offsetTop-10 + "px";break; //上
case 39:
obox.style.left = obox.offsetLeft+10 + "px";break; //右
case 40:
obox.style.top = obox.offsetTop+10 + "px";break; //下
}
}
</script>
