The background project of vue+element realizes that clicking on the left menu bar again refreshes the content on the right

In the vue project, how to click again and refresh the content on the right , I used [provide/inject] in vue, in simple terms. . Not much to say on the code

1. Set provide in the parent component

2. Don’t forget the reload() method in methods3
. Call it through inject in the left menu component

4. Just call the method directly where it needs to be executed