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/
来源：https://stackoverflow.com/questions/53536385/my-question-is-about-why-i-can-not-see-xpath-option-in-firebug-i-am-using-firefo