Why does such an error pop up?

Question

JavaScript

Hello, here I met with such a Jquery error for node js

TypeError: $.parseJSON is not a function

and I don’t understand why I included this library ....
Here is the code:

var WebSocketClient = require('websocket').client;
var $ = require('jquery');
var client = new WebSocketClient();

client.on('connect', function(connection) {
    console.log('WebSocket Client Connected');
    connection.on('error', function (error) {
        console.log("[ERROR]Connection Error: " + error.toString());
    });
    connection.on('close', function () {
        console.log('[WARNING] echo-protocol Connection Closed');
    });
    connection.on('message', function (message) {
        if (message.type === 'utf8') {
           console.log("Received: '" + message.utf8Data + "'");
           var string = message.utf8Data;
           var dannie = $.parseJSON(string);
           console.log(dannie.online);
        }
    });
});
client.connect('ws://node.csgohot.com:8083/', 'echo-protocol');

Answer 1

Use JSON.parse(str)