Create Action For Running Nodejs inside HTML - html

Question

I am new at Node.js
I create a server with node.js I have file like this:
Server.js
Client.js
Index.html
Server configuration is okay. But Inside HTML, I would like to link or an action to run client.js
At HTML, usually we use Link to link a page.
or
run npm with node client.js to run client.js
How I do it at html to run client.js, so if we click a link - client.js will run (the action is same like we do for run at npm node client.js)?
EDIT :
Oke, it looks like difficult to run client.js inside html with click. I changed my question.
I run node.js. And I open a browser (with anything extension html or js) and I would like to run client.js with a click. How do I do that?

Answer 1

I have never hear of such thing.
But I think, if you want to change something in server through frontend, http ajax is a good way.
But according to my acquaintance, when server accept a request from frontend, in a general way,it will run some code,such as function, but not js file.
You could run js file through child_process, it is a module in node, which use to call the shell in your system.
PS, shell.js is a better way if you want to call the shell in nodejs.
see this. https://github.com/shelljs/shelljs

Answer 2

Some server side programming environments work on the basis of having a program, in a file, for each URL that needs to be handled.
Node.js does not work that way.
You write a single server program which handles all the requests and which examines the URL of each one to determine what to do.
const http = require('http');
const server = http.createServer((req, res) => {
console.log(req.url);
if (req.url == "/") {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end("The homepage");
} else if (req.url == "/client.js") {
res.writeHead(200, {'Content-Type': 'text/plain'});
res.end("Whatever you want to do for a request for client.js");
} else {
res.writeHead(404, {'Content-Type': 'text/plain'});
res.end("Not found");
}
});
server.on('clientError', (err, socket) => {
socket.end('HTTP/1.1 400 Bad Request\r\n\r\n');
});
server.listen(8000);
While you might store some code in client.js, that filename wouldn't be mentioned to the client. The server would just load it like any other module and then conditionally call functions from it.