fetch without protocol code example

Example 1: .fetch method

fetch('http://example.com/data.json')
  .then(data => data);
  .catch(err => console.log(err));

Example 2: fetch

var formData = new FormData();
var fileField = document.querySelector("input[type='file']");

formData.append('username', 'abc123');
formData.append('avatar', fileField.files[0]);

fetch('https://example.com/profile/avatar', {
  method: 'PUT',
  body: formData
})
.then(response => response.json())
.catch(error => console.error('Error:', error))
.then(response => console.log('Success:', response));