The JavaScript code for the client

script.js

var connection = new WebSocket('ws://localhost:8080/greeter');
connection.onopen = function(){
  connection.send('connect');
}

connection.onerror = function (error) {
  console.log('WebSocket Error ' + error);
};

connection.onmessage = function(e){
  console.log('Server: ' + e.data);
}

function send(){
  connection.send('text');
}