If you use Quasar, there is openURL function:

import { openURL } from 'quasar'

openURL(
  'http://...',
  undefined,
  {
    target: '_blank'
  }
)

Docs:

1. https://quasar.dev/quasar-utils/other-utils/#openurl
2. https://developer.mozilla.org/en-US/docs/Web/API/Window/open#target