chrome调式工具

1.Elements
https://segmentfault.com/a/1190000008316690

2. Console
https://segmentfault.com/a/1190000008074942

3.JS调试
https://segmentfault.com/a/1190000008396389

4.Network
https://segmentfault.com/a/1190000008407729

5.Performance
https://segmentfault.com/a/1190000011516068