HTML5 新增绘图功能

<!DOCTYPE html>
<html>
<head lang="en">
    <title></title>
    <meta charset="utf-8">

</head>
<body>
    <h2>绘图入门</h2>
    <canvas id="mc" width="300" height="180" style="border:1px solid black"></canvas>
<script type="text/javascript">
    /*获取绘图DOM对象*/
    var canvas = document.getElementById("mc");
    /*获取绘图 CanvasRenderingContext2D对象*/
    var ctx = canvas.getContext("2d");
    /*设置填充颜色*/
    ctx.fillStyle = "#f00";
    /*绘制矩形*/
    ctx.fillRect(30,40,80,100);
</script>
</body>
</html>

以上案例比较简单，实际上可以绘制很复杂的图像