Socket.io how to send JavaScript object

Question

How to send JavaScript Object with Socket.io from server to client? I'm using Socket.io as WebSocket(sending with .send() and listen with message event). When I'm trying to do something like on server-side:

var myObject = {
    message: 'Hello World!'
}

socket.send(myObject);

on client-side I'm getting only this String: [object Object]

user_12129650 · Answer

In socket.io V4.x, there is no need to use JSON.stringify():

There is no need to run JSON.stringify() on objects as it will be done for you.

e.g.

// BAD
socket.emit("hello", JSON.stringify({ name: "John" }));

// GOOD
socket.emit("hello", { name: "John" });

Socket.io how to send JavaScript object

5 Answers