Ajax 相关的一些JS文件，包括对象建立，传输和返回处理-Ajax some JS-related documents, including the establishment of targets, delivery and return processing

针对聊天业务添加了一些属性：在线聊天，添加好友，添加黑名单，传输文件，主要有word，ppt。-To add some properties for chat business: online chat, add friends, add black list, transfer files, there are mainly word, ppt.