HTML5学习教程六 HTML5 Canvas(2)_H5之家 - 中国HTML5教程资源分享第一站

实例 - 渐变
使用您指定的颜色来绘制渐变背景：

ct_html5_canvas_gradient

Canvas 实例：渐变
JavaScript 代码：

canvas 元素：

<canvas id="myCanvas" width="200" height="100" style="border:1px solid #c3c3c3;"> Your browser does not support the canvas element. </canvas> <!DOCTYPE HTML> <html> <body> <canvas id="myCanvas" width="200" height="100" style="border:1px solid #c3c3c3;"> Your browser does not support the canvas element. </canvas> <script type="text/javascript"> var c=document.getElementById("myCanvas"); var cxt=c.getContext("2d"); var grd=cxt.createLinearGradient(0,0,175,50); grd.addColorStop(0,"#FF0000"); grd.addColorStop(1,"#00FF00"); cxt.fillStyle=grd; cxt.fillRect(0,0,175,50); </script> </body> </html>

亲自试一试

实例 - 图像
把一幅图像放置到画布上：

ct_html5_canvas_image

Canvas 实例：图像
JavaScript 代码：

canvas 元素：

<canvas id="myCanvas" width="200" height="100" style="border:1px solid #c3c3c3;"> Your browser does not support the canvas element. </canvas>

亲自试一试

<!DOCTYPE HTML> <html> <body> <canvas id="myCanvas" width="200" height="100" style="border:1px solid #c3c3c3;"> Your browser does not support the canvas element. </canvas> <script type="text/javascript"> var c=document.getElementById("myCanvas"); var cxt=c.getContext("2d"); var img=new Image() img.src="/i/eg_flower.png" cxt.drawImage(img,0,0); </script> </body> </html>

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