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.
Note: This method is available in Web Workers.
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
The compatibility table on this page is generated from structured data. If you'd like to contribute to the data, please check out https://github.com/mdn/browser-compat-data and send us a pull request.
| Feature | Chrome | Edge | Firefox | Internet Explorer | Opera | Safari |
|---|---|---|---|---|---|---|
| Basic support | 45 | 16 | 44 | ? | 32 | ? |
| Feature | Android webview | Chrome for Android | Edge mobile | Firefox for Android | Opera Android | iOS Safari | Samsung Internet |
|---|---|---|---|---|---|---|---|
| Basic support | 45 | 45 | Yes | 44 | 32 | ? | 5.0 |