difference in react and injs fetch code example

Example 1: javascript fetch api

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

Example 2: fetch

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