quasar-framework/src/utils/uid.js

Simultaneously build desktop/mobile SPA websites & phone/tablet apps with VueJS

function s4 () {
  return Math.floor((1 + Math.random()) * 0x10000)
    .toString(16)
    .substring(1)
}

export default function () {
  return s4() + s4() + '-' + s4() + '-' + s4() + '-' +
    s4() + '-' + s4() + s4() + s4()
}