javascript fetch headers
fetch('https://example.com/profile', {
method: 'POST', // or 'PUT'
headers: {
'Content-Type': 'application/json',
},
body: JSON.stringify(data),
})
.then(response => response.json())
.then(data => {
console.log('Success:', data);
})
.catch((error) => {
console.error('Error:', error);
});Add no cores to fetch
// There were no quick access to mode and credentials to other fetch answers.
// Data you'll be sending
const data = { funny: "Absolutely not", educational: "yas" }
fetch('https://example.com/api/', {
method: 'POST', // The method
mode: 'no-cors', // It can be no-cors, cors, same-origin
credentials: 'same-origin', // It can be include, same-origin, omit
headers: {
'Content-Type': 'application/json', // Your headers
},
body: JSON.stringify(data),
}).then(returnedData => {
// Do whatever with returnedData
}).catch(err => {
// In case it errors.
})fetch api javascript
fetch('http://example.com/movies.json')
.then((response) => {
return response.json();
})
.then((myJson) => {
console.log(myJson);
});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()
})How do you read HEADERS in API response?
response.getHeader("Headername");
For popular headers like, ContentType, there is built in-ready
methods.
response.contentType();
response.getContentType();Copyright © 2021 Codeinu
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