what is fetch method in javascript code example

Example 1: fetch api javascript

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

Example 2: .fetch method

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

Example 3: .fetch method

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