Как можно обращаться к серверу

fetch('https://api.example.com/data')
  .then(response => response.json())
  .then(data => console.log(data))
  .catch(error => console.error('Error:', error));

const xhr = new XMLHttpRequest();
xhr.open('GET', 'https://api.example.com/data');
xhr.onload = function() {
  if (xhr.status === 200) {
    console.log(JSON.parse(xhr.response));
  }
};
xhr.send();

axios.get('https://api.example.com/data')
  .then(response => console.log(response.data))
  .catch(error => console.error(error));

const socket = new WebSocket('wss://api.example.com');
socket.onmessage = (event) => {
  console.log('Data:', event.data);
};