HTML 5 标签

<!DOCTYPE HTML>
<html>
<body>

<canvas id="myCanvas">your browser does not support the canvas tag </canvas>

<script type="text/javascript">

var canvas=document.getElementById('myCanvas');
var ctx=canvas.getContext('2d');
ctx.fillStyle='#FF0000';
ctx.fillRect(0,0,80,100);

</script>

</body>
</html>

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原文地址：https://www.cnblogs.com/lxwphp/p/15454925.html