老师，请检查

来源：3-5 编程练习

慕函数4436287

2019-06-05 10:44:24

<!DOCTYPE html>
<html>
<head>
   <meta charset="UTF-8">
   <title>canvas</title>
   <style>
       canvas{background-color:lightpink;}
   </style>
</head>
<body>
   <canvas id="canvas" width="600" height="600">
       您的浏览器不支持canvas
   </canvas>
   <script>
    //在此处填写代码
   var canvas=document.getElementById("canvas");
   var ctx=canvas.getContext("2d");
   ctx.moveTo(300,150);
   ctx.lineTo(100,420);
   ctx.strokeStyle = "red";
   ctx.lineWidth = 1;
   ctx.stroke();
   ctx.beginPath();
   ctx.moveTo(300,150);
   ctx.lineTo(500,420);
   ctx.strokeStyle = "blue";
   ctx.lineWidth = 1;
   ctx.stroke();
   ctx.beginPath();
   ctx.moveTo(100,420);
   ctx.lineTo(500,420);
   ctx.strokeStyle = "green";
   ctx.lineWidth = 1;
   ctx.stroke();
   
    </script>
</body>
</html>

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