HTTP Server: Hello World

Import the http server from std/http.

import { serve } from "https://deno.land/std@0.175.0/http/server.ts";

HTTP servers need a handler function. This function is called for every request that comes in. It must return a `Response`. The handler function can be asynchronous (it may return a `Promise`).

function handler(_req: Request): Response {
  return new Response("Hello, World!");
}

To start the server on the default port, call `serve` with the handler.

console.log("Listening on http://localhost:8000");
serve(handler);