<!DOCTYPE HTML>
<html>
<title>Canvas直线</title>
<body>
<canvas id="myCanvas" width="200" height="200" style="border:#06F solid 2px">
您的浏览器不支持 Canvas
</canvas>
<script type="text/javascript">
var c = document.getElementById("myCanvas");
var cxt = c.getContext("2d");
cxt.beginPath();
cxt.moveTo(70,140);
cxt.lineTo(140,70);
cxt.stroke();
</script>
</body>
</html>