接到任务，要写一个项目协作系统，任务不急，嘿嘿，用extjs试试看,自学了1个礼拜，就开始操刀了,代码很简单，模块化,希望对学习extjs的朋友有帮助-Received a task to write a project collaboration system, tasks are not urgent now, hey, give it a try with extjs, a self-study a week, began to wield the sword, the code is v