html5 canvas 的阴影效果的应用

1.

http://www.html5rocks.com/en/tutorials/canvas/texteffects/#toc-text-shadow-alpha 

http://www.html5rocks.com/en/tutorials/canvas/texteffects/Text-Effects.html 

 

2. 7款html5 Demo

http://surda.cn/2010/06/seven-html5-canvas-demo/