為什么我的對角線實現不了
JS代碼：
var chess = document.getElementById('chees');
var context = chess.getContext('2d');
context.strokeStyle="#BFBFBF";
context.moveTo(0,0);
context.lineTo(450,450);
context.stroke();
HTML代碼：
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8" />
<title>五子棋</title>
<link rel="stylesheet" href="css/style.css" />
</head>
<body>
<canvas id="chess" width="450px" height="450px"></canvas>
<script type="text/javascript" src="js/script.js" ></script>
</body>
</html>
2016-10-17
var chess = document.getElementById('chees'); ?id取錯了，是chess
2017-02-12
var?chess?=?document.getElementById('chess'); var?context?=?chess.getContext('2d'); context.storkeStyle?=?"#BFBFBF"; context.moveTo(0,?0); context.lineTo(450,?450); context.storke();canvas?{ display:?block; margin:?50px?auto; box-shadow:?-2px?-2px?2px?#EFEFEF,?5px?5px?5px?#B9B9B9; }我這樣也沒有斜線，這是為什么，ID沒錯呀？？