<!DOCTYPE html>
<html>
<body>
<canvas id="myCanvas" width="400" height="200" 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.strokeStyle = "red";
ctx.moveTo(5, 100);
ctx.lineTo(395, 100);
ctx.stroke();
ctx.font = "20px Arial"
ctx.textBaseline = "top";
ctx.fillText("Top", 5, 100); ctx.textBaseline = "bottom";
ctx.fillText("Bottom", 50, 100); ctx.textBaseline = "middle";
ctx.fillText("Middle", 120, 100); ctx.textBaseline = "alphabetic";
ctx.fillText("Alphabetic", 190, 100); ctx.textBaseline = "hanging";
ctx.fillText("Hanging", 290, 100); </script>
</body>
</html>