Hello, world!

You can use Edge Functions to return a plain HTTP text/html response. In this example, we return the string "Hello, World!" as text/html.

export default async (Request) => {
  return new Response("Hello, World!", {
    headers: { "content-type": "text/html" },
  });
};

See this in action

View the response from the Edge Function
The Edge Function code: hello.js

Pro tip!

Need to return JSON data from an Edge Function? Check out the JSON response method on the Context object!

Explore more examples

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! And 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 an edge-functions directory in your project, and add [[edge_functions]] entries to your netlify.toml file.

Learn more in the docs.

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