Under what circumstances will the value in the parmas of vue router be a string array?

[Bo-Teng]

I saw in the documentation that the value of the RouteParams property may be an array, but I didn't find what would be the case.

[skirtles-code]

For repeatable params. See https://router.vuejs.org/guide/essentials/route-matching-syntax.html#Repeatable-params.

e.g.:

const routes = [
  // matches /one, /one/two, /one/two/three, etc.
  { path: '/:chapters+' },
  // matches /, /one, /one/two, /one/two/three, etc.
  { path: '/:chapters*' },
]