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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="utf-8">
<title>初学html5</title>
<meta name="keywords" content="">
<meta name="description" content="">
<script src="canva5.js"></script>
<style>
*{margin:0;padding:0;}
</style>
</head>
<body onload="draw(‘canvas‘);">
<canvas id="canvas" width="400" height="300"></canvas>
</body>
</html>
function draw(id)
{
var canvas=document.getElementById(id);
var context=canvas.getContext(‘2d‘);
context.fillStyle=‘green‘;
context.fillRect(0,0,800,300);
context.fillStyle="#fff";
context.strokeStyle="#fff";
context.font="bold 40px 宋体";
context.textBaseline="top";
context.fillText("麦子学院",0,0);
context.strokeText("麦子学院",0,40);
window.location=canvas.toDataURL("images/jpeg");
}
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原文地址：http://www.cnblogs.com/ll-taj/p/5293033.html
