<html>
<body>
<canvas id="myCanvas" width="300" height="150" style="border:1px solid #d3d3d3;">
您的浏览器不支持 HTML5 canvas 标签。</canvas>
<script>
var c=document.getElementById("myCanvas");
var ctx=c.getContext("2d");
ctx.beginPath();
ctx.lineWidth="5";
ctx.strokeStyle="green"; // Green path
ctx.moveTo(0,75);
ctx.lineTo(250,75);
ctx.stroke(); // Draw it
ctx.beginPath();
ctx.strokeStyle="purple"; // Purple path
ctx.moveTo(50,0);
ctx.lineTo(150,130);
ctx.stroke(); // Draw it
</script>
</body>
</html>