Headers.entries

The Headers.entries() method returns an iterator allowing to go through all key/value pairs contained in this object. The both the key and value of each pairs are ByteString objects.

Syntax

headers.entries();

Return value

Returns an iterator.

Example

// Create a test Headers object
var myHeaders = new Headers();
myHeaders.append('Content-Type', 'text/xml');
myHeaders.append('Vary', 'Accept-Language');

// Display the key/value pairs
for (var pair of myHeaders.entries()) {
   console.log(pair[0]+ ': '+ pair[1]);
}

The result is:

content-type: text/xml
vary: Accept-Language

Specifications

Specification	Status	Comment
Fetch The definition of 'Headers.entries() (as iterator<>)' in that specification.	Living Standard	Initial definition.

Browser compatibility

See also

• ServiceWorker API
• HTTP access control (CORS)
• HTTP