Sometimes, it's better to have fast, bi-directional communication between the browser and the server.
At such a time, you can try web sockets. They're an upgrade to the traditional HTTP communication seen in Ajax. To work with them easily, we need the help of Socket.IO:
npm install --save socket.io
Now we can access a new object, which we'll call io:
// ...enable JSX/ES6 compilation
var app = require("express")();
var server = require("http").Server(app);
var io = require("socket.io")(server);
app.get("/", function (request, response) {
response.send(
require("./hello-world")
);
});
// ...define other endpoints
io.on("connection", function (socket) {
console.log("connection");
socket.on("message", function (message) {
console.log("message: " + message);
io.emit("message", message);
});
});
server.listen(3000);