Edge Functions on Netlify

Reference examples for learning about Edge Functions on Netlify.


Use environment variables

To access your Netlify environment variables in Edge Functions, use the Netlify.env API.

import type { Context } from "@netlify/edge-functions";

export default async (request: Request, context: Context) => {
  const value = Netlify.env.get("MY_IMPORTANT_VARIABLE");

  return new Response(`Value of MY_IMPORTANT_VARIABLE is "${value}".`, {
    headers: { "content-type": "text/html" },
  });
};

See this in action

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What are Edge Functions?

Using JavaScript and TypeScript, Netlify Edge Functions give you the power to modify network requests to localize content, serve relevant ads, authenticate visitors, A/B test content, and much more!

This all happens at the Edge — directly from the worldwide location closest to each user.

To use Edge Functions on Netlify, add JavaScript or TypeScript files to a /netlify/edge-functions directory in your project.

Learn more in the docs.


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