Add React Advanced for javascript

[confs-tech-bot]

Conference information

Website: https://reactadvanced.com
CFP: https://gitnation.com/events/react-advanced-2026/cfp

Twitter: https://twitter.com/@ReactAdvanced

// javascript

{
  "name": "React Advanced",
  "url": "https://reactadvanced.com",
  "startDate": "2026-10-23",
  "endDate": "2026-10-26",
  "city": "London",
  "country": "U.K.",
  "online": true,
  "locales": "EN",
  "cocUrl": "https://gitnation.com/coc",
  "cfpUrl": "https://gitnation.com/events/react-advanced-2026/cfp",
  "cfpEndDate": "2026-05-24",
  "twitter": "@ReactAdvanced"
}