Headers: delete() method

The delete() method of the Headers interface deletes a header from the current Headers object.

For security reasons, some headers can only be controlled by the user agent. These headers include the forbidden request headers and forbidden response header names.

Syntax

delete(name)

Parameters

name

The name of the HTTP header you want to delete from the Headers object.

Return value

None (undefined).

Examples

Creating an empty Headers object is simple:

const myHeaders = new Headers(); // Currently empty

You could add a header to this using Headers.append:

myHeaders.append("Content-Type", "image/jpeg");
myHeaders.get("Content-Type"); // Returns 'image/jpeg'

You can then delete it again:

myHeaders.delete("Content-Type");
myHeaders.get("Content-Type"); // Returns null, as it has been deleted

Specifications

Browser compatibility

See also

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