<!DOCTY
PE ht
ML><head>
<
;meta charset=utf-8>
<t
ITle>HTML5画线、
圆、矩形</title>
<script src="<a
href="http://ajax.
GOOGLEapis
.COM/ajax/libs/
jquery/1.7.1/jquery.min.js"></script">http://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script</a>>
</head>
<script>
$(document).ready(function(){
VAR c=document.getElementById("drawbox");
var draw=c.getContext("2d"); //获取2d内容的引用,调用绘图API</p>
<p>//指定渐变区块
var grd=draw.createLine
argra
dient(50,50,200,50); //坐标,长
宽grd.addColorStop(0,"black"); //起点颜色
grd.addColorStop(1,"green"); //终点颜色</p>
<p>draw.fillStyle=grd; //设为填充样式
draw.fillRect(50,50,200,50); //填充进矩形内
})
</script>
</body>
<canvas id="drawbox" width="500" h
eight="500"></canvas>
</body>
</html>