webSocketTemplate.js

/**
 * Just a piece of code to start.
 */

const host = "127.0.0.1:57772";

let ws = new WebSocket(`ws://${ host }/csp/user/WebCourse.ChatWebSocket.cls`);
ws.addEventListener(`open`, () => {
    console.log(`We are connected to the chat!`);
});
ws.addEventListener(`error`, (err) => {
    console.error(`Connection error:`, err);
});
ws.addEventListener(`close`, () => {
    console.log(`We are disconnected from the chat.`);
});
ws.addEventListener(`message`, ({ data }) => {
    console.log(`Data received from the server:`, JSON.stringify(data));
});