Headers.delete()

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

This method throws a TypeError for the following reasons:

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

Syntax

myHeaders.delete(name);

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

Void.

Creating an empty Headers object is simple:

var 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

Specification
Fetch Standard (Fetch) # ref-for-dom-headers-delete①

	Desktop						Mobile
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari	WebView Android	Chrome Android	Firefox for Android	Opera Android	Safari on IOS	Samsung Internet
`delete`	42	14	39	No	29	10.1	42	42	No	29	10.3	4.0