MDN Web Docs

Syntax

js

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:

js

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

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

js

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

You can then delete it again:

js

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

Specifications

Specification
Fetch
# ref-for-dom-headers-delete①

Browser compatibility

See also

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