学习<<WEB调试工具-Firebug>>,firbug是网页浏览器firefox的下的一款开发类插件,它集HTML查看好编辑、JavaScript控制台、网络状况监视器于一体，是开发JavaScript、CSS、Html和Ajax的得力助手.
打开Firebug网页的结果如下:
Thank you, Firebug. You made the web amazing for all!
The story of Firefox and Firebug are synonymous with the rise of the web. We fought the good fight and changed how developers inspect HTML and debug JS in the browser. Firebug ushered the Web 2.0 era. Today, the work pioneered by the Firebug community through the last 12 years lives on in Firefox Developer Tools. Switch to the latest version of Firefox and see the very latest devtools updates.
