Note: This feature is available in Web Workers.
The Headers.entries() method returns an iterator allowing to go through all key/value pairs contained in this object. Both the key and value of each pair are String objects.
entries()None.
Returns an iterator.
// Create a test Headers object
const myHeaders = new Headers();
myHeaders.append("Content-Type", "text/xml");
myHeaders.append("Vary", "Accept-Language");
// Display the key/value pairs
for (const pair of myHeaders.entries()) {
console.log(`${pair[0]}: ${pair[1]}`);
}The result is:
content-type: text/xml vary: Accept-Language