Static and dynamic subdomains for Express.
npm i subpress
const subpress = require("subpress");
const express = require("express");
const hello = require("./hello");
const app = express();
app.use(subpress("hello"), hello);
app.listen(3000, function() {
console.log("Express running with Subpress on port 3000!");
});
Contents of hello.js
:
const express = require("express");
const router = express.Router();
router.get("/", function(req, res) {
res.send("Hello from the 'hello' subdomain!");
});
module.exports = router;
Now visit hello.yourwebsite.tld
and you should see "Hello from the 'hello' subdomain!"
In the first argument on the subpress
function, you can also pass an array instead of a single subdomain, still using one handler, e.g.:
app.use(subpress(["help", "contact", "merch"], handler));
Now the same handler (router) handles all three of the provided subdomains, i.e. help.yourwebsite.tld
, contant.yourwebsite.tld
, and merch.yourwebsite.tld
.
Note: If you are testing this in localhost
, test.localhost
will NOT be treated as a subdomain, as it probably matches the URL RegExp in Express (test
would be the website name and localhost
the domain extension). For it to be a subdomain, you would need to visit test.test.localhost
for it to be treated as localhost
.
Dynamic/wildcard usage:
app.use(subpress("*"), require("./dynamicRouter"));
In dynamicRouter.js
:
const express = require("express");
const router = express.Router();
router.get("/", function(req, res) {
res.send(`Hello from the dynamic '${req.subpress.subdomain}' subdomain!`);
});
module.exports = router;
And that's it!
Sub-sub-subdomains and the such:
app.use(subpress("hello.world.goodbye.world", handler)); // Go to http://hello.world.goodbye.world.yourdomain.tld
Copyright © 2021 codingjlu
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