My question is about why i can not see xpath optio

问题:

My question is about, why i can not see xpath option in firebug.I am using firefox 56.0.1 (64-bit) version and firebug 2.0.19. version?

回答1:

Firebug is discontinued from 2017. The main reason is Firefox's new architecture of multiprocess which firebug doesn't support. So, you would see many problems in firebug with firefox.

Reference - https://hacks.mozilla.org/2017/10/saying-goodbye-to-firebug/