chrome开发者工具下提示:
[WARN][Anonymous] [Ext.Loader] Synchronously loading 'Ext.field.Text'; consider adding 'Ext.field.Text' explicitly as a require of the corresponding class
解决方法:事先指定加载 Ext.field.Text (文件路径为 src/field/Text.js)
详细原理参考:http://blog.csdn.net/yanwushu/article/details/8296372