Answers for "fetch javascript what returns"

js function return fetch result

function getvals(){
    return fetch('https://jsonplaceholder.typicode.com/posts',
    {
    	method: "GET",
      headers: {
        'Accept': 'application/json',
        'Content-Type': 'application/json',
      },
    })
    .then((response) => response.json())
    .then((responseData) => {
      console.log(responseData);
      return responseData;
    })
    .catch(error => console.warn(error));
  }
  
  getvals().then(response => console.log(response));

how to use fetch() javascript

//Most API's will only allow you to fetch on their website.
//This means you couldn't run this code in the console on 
// google.com because:
// 		1. Google demands the fetch request be from https
// 		2. open-notify's API blocks the request outside of their website

fetch('http://api.open-notify.org/astros.json')
.then(function(response) {
  return response.json();
})
.then(function(json) {
  console.log(json)
});

// Here is another example. A method (function) that 
// grabs Game of Thrones books from an API ...

function fetchBooks() {
  return fetch('https://anapioficeandfire.com/api/books')
  .then(resp => resp.json())
  .then(json => renderBooks(json));
}

function renderBooks(json) {
  const main = document.querySelector('main')
  json.forEach(book => {
    const h2 = document.createElement('h2')
    h2.innerHTML = `<h2>${book.name}</h2>`
    main.appendChild(h2)
  })
}

document.addEventListener('DOMContentLoaded', function() {
  fetchBooks()
})