Headers: entries() method
Baseline Widely available
This feature is well established and works across many devices and browser versions. It’s been available across browsers since March 2017.
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.
Syntax
js
entries()
Parameters
None.
Return value
Returns an iterator
.
Examples
js
// 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
Browser compatibility
Report problems with this compatibility data on GitHubdesktop | mobile | server | ||||||||||||
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entries |
Legend
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- Full support
- Full support
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.