How to solve the problem that firefox does not support document.all_Basic knowledge

Today I wrote the v2 version of Kinoko-World and encountered a small problem with js. document.all is not supported in Firefox. I searched online and found that
use document.getElementsByTagName("*") instead and it will be OK.
getElementsByTagName("*") can get a collection of all elements
getElemntById can get an element by id
getElementsByName can get an element by name attribute

getElementById works better Ah