sencha touch 的4中build

sencha app build 后面一般会有一个参数，不同的参数编译出来的效果不同，具体参照下面：

• 'testing' is meant for QA prior to production. All JavaScript and CSS source Files are bundled, but not minified, which makes it easier for debugging if needed

用于测试，只是把所有的js打包成一个app.js

• 'package' creates a self-contained, re-distributable production build that normally runs from local file system without the need for a web server

只打包了关联的js

• 'production' creates a production build that is normally hosted on a web server and serves multiple clients (devices). The build is offline-capable using HTML 5 application cache, and has built-in over-the-air delta updating feature

自动生成了离线缓存

• 'native' first generates a 'package' build, then packages it as a native application, ready to be deployed to native platforms
• 这种方式生成My Application.app，用于ios产品封装