键盘移动小div(js原生)
<!doctype html>
<html>
<head>
<meta charset="utf-8">
<title>无标题文档</title>
<style>
div{
100px;
height:100px;
background-color:red;
position:absolute;
left:100px;
top:100px;
}
</style>
</head>
<body>
<div ;
}
}
document.onkeyup = function() {
l = false;
t = false;
r = false;
b = false;
}
</script>
</body>
</html>