复制代码 代码如下:

<canvas id=\"myCanvas\" width=”300” height=”200” style=\"border:1px solid #c3c3c3;\">
Your browser does not support the canvas element.
</canvas>
<script type=\"text/javascript\">
var myCanvas = document.getElementById(\"myCanvas\");
if (!myCanvas.getContext)
{
alert(\"你的浏览器不支持Canvas.\");
}
else
{
alert(\"你的浏览器支持Canvas.\");
}
</script>