新建tank_game.html
<!doctype html>
<html>
<head>
<meta charset="utf-8"/>
<title>
坦克大战
</title>
</head>
<body>
<h1>html5-经典坦克大战</h1>
<canvas id="tankMap" width="400px" height="300px" style="background-color:black">
<script type="text/javascript">
var canvas1=document.getElementById("tankMap");
var cxt=canvas1.getContext("2d");
var pointX=200;
var pointY=280;
//画出自己的坦克
cxt.fillStyle="#DED284";
//坦克左边轮
cxt.fillRect(pointX-10,pointY-15,5,30);
//坦克右边轮
cxt.fillRect(pointX+5,pointY-15,5,30);
//坦克中间身体矩形
cxt.fillRect(pointX-5,pointY-10,10,20);
//画出中间的圆
cxt.beginPath();
cxt.arc(pointX,pointY,3.5,0,2*Math.PI);
cxt.closePath();
cxt.stroke();
//炮管
cxt.strokeStyle="#FFD902";
cxt.lineWidth=1.5;
cxt.beginPath();
cxt.moveTo(pointX,pointY);
cxt.lineTo(pointX,pointY-15);
cxt.closePath();
cxt.stroke();
</script>
</body>
</html>