Cloudflare Docs
Workers
Cloudflare Docs
Workers
GitHub icon
Visit Workers on GitHub
Set theme to dark (⇧+D)
  1. Products
  2. Workers
  3. Examples
  4. Cookie parsing

Cookie parsing

Given the cookie name, get the value of a cookie. You can also use cookies for A/B testing.
import { parse } from "cookie";

export default {
  async fetch(request) {
    // The name of the cookie
    const COOKIE_NAME = "__uid";
    const cookie = parse(request.headers.get("Cookie") || "");
    if (cookie[COOKIE_NAME] != null) {
      // Respond with the cookie value
      return new Response(cookie[COOKIE_NAME]);
    }
    return new Response("No cookie with name: " + COOKIE_NAME);
  },

};

const handler: ExportedHandler = {
  async fetch(request) {
    // The name of the cookie
    const COOKIE_NAME = "__uid";
    const cookie = parse(request.headers.get("Cookie") || "");
    if (cookie[COOKIE_NAME] != null) {
      // Respond with the cookie value
      return new Response(cookie[COOKIE_NAME]);
    }
    return new Response("No cookie with name: " + COOKIE_NAME);
  },

};



export default handler;