Implementation of analog data

1. Why write analog false data?

- separated front and rear ends, front and rear ends simultaneous development, when the interface is not

2. mock.js generation 

- Experience:

- when we're using, look for cases, looking similar to the structure of their own field, and then copy the syntax, make the corresponding modifications

3. Copy line similar json

- Browser Developer Tools / netWork / XHR / copy response

4. easy mock