<html><body><canvas id="myCanvas" width="200" height="100" 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.font="30px Arial";ctx.strokeText("Hello World",10,50);</script></body></html>