为什么canvers无法显示?
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>五子棋</title>
<link rel="stylesheet" type="text/css" href="css/style.css">
</head>
<body>
<canvers id="chess" width="450px" height="450px"></canvers>
<script type="text/javascript" src="js/script.js">
</script>
</body>
</html>