Daniel Rodríguez Mezaon Stack Overflow • Recommends
On “Vuetify, tooltips: what are "on" and "attrs" for?”
I could explain myself what that means, but I consider that this video explains it a lot better I let you the time where it stars explaining the utility of v-on and attrs
Just take a look to the section Transparent wrappers
link to this video
Summary
v-on : Binds a series of listener functions
More in: https://v2.vuejs.org/v2/api/#v-on
$attrs : Stores the attributes setted in the parent component, you can reuse them in a inner component
More in: https://v2.vuejs.org/v2/api/#inheritAttrs
You can find other usages besides of what is shown in the video, but transparent wrappers are a common use case.