Websocket problem

My question is not about the construct.

I want to make a simple and (independent of the construct) web chat using websocket (by which two devices connected to the same Wi-Fi can communicate locally)

I searched on Google.

I made a local server named server.js.

And also an html file for the client.

Through the cmd window and the command:

node server.js,

I ran app server and I was able to successfully connect the client to it.

But I plan to also run the server.js file in the browser (html file).

But when I run its codes by html.

gives an error that:

require ws(web socket) undefined

I think the requier doesn't run in the browser. How do I solve it?

your html should use the websocket client and find the WS

let socket = new WebSocket("ws://yourws.com");

socket.onopen = function(e) {

alert("[open] Connection established");

alert("Sending to server");

socket.send("My name is John");

};

socket.onmessage = function(event) {

alert(`[message] Data received from server: ${event.data}`);

};

socket.onclose = function(event) {

if (event.wasClean) {

alert(`[close] Connection closed cleanly, code=${event.code} reason=${event.reason}`);

} else {

// e.g. server process killed or network down

// event.code is usually 1006 in this case

alert('[close] Connection died');

}

};

socket.onerror = function(error) {

alert(`[error]`);

};