Path: csiph.com!fu-berlin.de!uni-berlin.de!individual.net!not-for-mail
From: Arno Welzel <usenet@arnowelzel.de>
Newsgroups: comp.lang.javascript
Subject: Re: Node.js
Date: Thu, 14 Oct 2021 15:34:41 +0200
Lines: 54
Message-ID: <isqpvhFc4phU1@mid.individual.net>
References: <5f57e300-fd03-466c-96af-75fd67f72420n@googlegroups.com> <c8cfb8c6-deed-4d1f-846d-257b942c79d9n@googlegroups.com> <c9ae1e2b-73b7-4f49-9588-954c2fd7b2f7n@googlegroups.com>
Mime-Version: 1.0
Content-Type: text/plain; charset=utf-8
Content-Transfer-Encoding: 8bit
X-Trace: individual.net T4LemMAmAO2ZlthTiLJJJQMT7M01nxp1A0Q0tTrpoQdHiU7YCm
Cancel-Lock: sha1:xgPvus95eQgKoke1fVSSycqnus8=
In-Reply-To: <c9ae1e2b-73b7-4f49-9588-954c2fd7b2f7n@googlegroups.com>
Xref: csiph.com comp.lang.javascript:40474

Jonas Thörnvall:

[...]
> I am not sure what braindead monkey wrote that intro but....
> 
> "Now, run your web server using node app.js. Visit
> http://localhost:3000 and you will see a message saying "Hello
> World". Refer to the Introduction to Node.js for a more comprehensive
> guide to getting started with Node.js."

Why do you say "braindead monkey"?

This is instruction is quite clear:

1) Run the command "node app.js" in your console

2) Open your browser and visit http://localhost:3000

> But i think he left out a couple of steps, like it should be run from
> commandline, i got it running now.

Of course! What else should "run your webserver using [node app.js]" mean?

> Is it something similar to PHP, must the whole code base "vanilla
> javascript" be generated dynamically thru the server? Or can i from
> the clientside script invole functionality from server?

Yes, Node.js runs completely on the server and *not* in the browser.
Furthermore Node.js applications are designed to run continously while
in PHP a script will only run once for the request then exit again (yes,
PHP-FPM will continue running and waiting for the next request from the
webserver but each PHP script will just be executed again for each
incoming HTTP request).

For example: The script app.js from
<https://nodejs.org/en/docs/guides/getting-started-guide/> will run as
long as you don't stop the "node" process.

The following function will handle all incoming requests from a browser:

const server = http.createServer((req, res) => {
  res.statusCode = 200;
  res.setHeader('Content-Type', 'text/plain');
  res.end('Hello World');
});

"req" is the request object which contains everything sent by the
browser and "res" is the response object which will generate the
response sent back to the browser.


-- 
Arno Welzel
https://arnowelzel.de