How to set modes in fetch api code example

Example 1: fetch api javascript

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

Example 2: redirect to website from promise value fetch

fetch("http://example.com/", {
	method: 'POST',
	mode: 'cors',
	body: formData
})
.then(dataWrappedByPromise => dataWrappedByPromise.text())
.then(data => {
	//Redirect is the URL inside the text of the response promise
	window.location.replace(data);
})