HTTP response headers in AJAX in JavaScript
The response headers are stored in the
headers property of the
response object. Let's retrieve
some header:
button.addEventListener('click', function() {
fetch('/ajax.html').then(response => {
console.log(response.headers.get('Content-Type'));
});
});
And now let's go through all the headers in a loop:
button.addEventListener('click', function() {
fetch('/ajax.html').then(response => {
for (let [key, value] of response.headers) {
console.log(key, value);
}
});
});
Get a content of the
Content-Language header.
Get a content of the
Content-Length header.
