<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Title</title>
<link rel="stylesheet" href="style/default.css"/>
<script src="third-common/jquery-1.12.4.js"></script>
<script src="common/canvasbox.js"></script>
</head>
<body>
<div id="canvas_box"></div>
<button id="btn">获取</button>
<script src="script/default.js"></script>
</body>
</html>