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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 ⁨October 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

entries()

Parameters

None.

Return value

Returns an iterator.

Examples

// 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