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polymer tutorial, will help to ensure knowledge about it.

支付宝APP支付demo及源码，仅供参考(Alipay APP pays demo)

说明：  登陆窗口设计登陆窗口设计登陆窗口设计登陆窗口设计登陆窗口设计(The design of window-window design landing landing landing window design landing window design landing window design)

一个简单的论坛系统,包含用户注册，浏览，发表帖子，后台管理。还包含一个自己写的标签库(A simple forum system, including user registration, browse, publish posts, backstage management. Also contains a tag library to write their own)

网站模板 经典企业网站 静态html(website model.)

简单，轻便的social networking platform，社交网络系统，即使聊天工具，多语言支持，模版定制。有会员管理后台，初学者或sns开发值得研究。

说明：  use java to achieve a shopping web

说明：  本章实现了网上选课系统，通过该系统，学校不同角色的用户可以通过网路完成选课系统功能：管理员通过该系统实现对学生、教师、课程的添加和维护和学生成绩的维护；教师通过该系统实现查看课程选修情况和录入学生成绩；学生通过该系统实现选课、退课等功能(This chapter to achieve an online course system, through the system, the role of schools of different network users can complete the course selection system functions: administrator of the system implementation by students, teachers, curriculum additions, and maintenance and the maintenance of student achievement teachers View courses through the system to achieve elective conditions and student achievement entry students through the system to achieve enrollment, class functions return)

以现在比较流行的asp.net写的一个吧b2c模式的电子商务网站，网站有前台和后台，不涉及网上交易实际操作部分，基本的网页操作功能，后台商品管理，用户管理，网上交易接口，内有数据库配置说明，按步骤就能成功搭建并打开此网站，非常适合新手练手。

说明：  python 爬虫实战。爬取JMLR（Journal of Machine Learning Research ）期刊中的所有论文的信息（title， author， abs， url等）。要解析xpath，处理字符编码等。(Python Crawler. Crawl all the papers in JMLR (Journal of Machine Learning Research) journals (title, author, abs, url, etc.))