When I began to learn to vue, search of some practical source code about vue, but most of them are simple demo and didn't help to explore the vue. The most of demo are front-end page, such as music player interaction not as complicated as expected.But in actual work, we often meet some project involving money, such as shopping cart page. This kind of project is complex, accompany by login, register ,user information and so on. It's difficult, no one has ever written a project like this in vue and commit to github. So I write it, hope I can hope you.