Headers

js.html.Headers (extern class)

The Headers interface of the Fetch API allows you to perform various actions on HTTP request and response headers. These actions include retrieving, setting, adding to, and removing. A Headers object has an associated header list, which is initially empty and consists of zero or more name and value pairs.  You can add to this using methods like append() (see Examples.) In all methods of this interface, header names are matched by case-insensitive byte sequence.

Documentation Headers by Mozilla Contributors, licensed under CC-BY-SA 2.5.

See:

Instance Members

append(name: String, value: String): Void

Appends a new value onto an existing header inside a Headers object, or adds the header if it does not already exist.

Name Type
name String
value String
delete(name: String): Void

Deletes a header from a Headers object.

Name Type
name String
get(name: String): String

Returns a ByteString sequence of all the values of a header within a Headers object with a given name.

Name Type
name String
Returns
String
has(name: String): Bool

Returns a boolean stating whether a Headers object contains a certain header.

Name Type
name String
Returns
Bool
set(name: String, value: String): Void

Sets a new value for an existing header inside a Headers object, or adds the header if it does not already exist.

Name Type
name String
value String
entries(): HeadersIterator

Returns an Iteration_protocols allowing to go through all key/value pairs contained in this object.

Returns
HeadersIterator

Returns an Iteration_protocols allowing you to go through all keys of the key/value pairs contained in this object.

Returns
HeadersIterator

Returns an Iteration_protocols allowing you to go through all values of the key/value pairs contained in this object.

Returns
HeadersIterator
forEach(callback: Dynamic, ?thisArg: Dynamic): Void

Executes a provided function once for each array element.

Name Type Default
callback Dynamic
thisArg Dynamic (optional)
new(?init: Headers): Void
Name Type Default
init Headers (optional)