although I don't know how your jump logic works, you put the code of bus.$on in main.js , then take a look at the effect, and then combine with the documentation to gain an in-depth understanding of the methods and skills of using bus : first listen, and then trigger
replace it with vuex to make it easier to use
< hr class=.your problem is as described by luozz listen first, then trigger
you can see from the code that you jumped to / nav1 using router.push after bus.$emit, while your listeners are written in nav1, obviously reversing the order
. Thesolution can consider the suggestion of Rossy1 , which is not suitable for event bus
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