windows.Headers

Headers class represents HTTP request and response headers.

Since: v7.3.0

Headers([init])

Param
Type
Description
[init]
Headers | Array<{string, string}> | Object
An existing Headers object, an array of name-value pairs or object literal with string values.

append(name, value)

Appends a new value onto an existing header inside a Header object, or add the header if it does not exist.

See: Headers - append

Param
Type
Description
name
string
Name of the HTTP header
value
string
Value of the HTTP header

delete(name)

Deletes a header from the current Header object.

See: Headers - delete

Param
Type
Description
name
string
Name of the HTTP header

get(name)

Returns a byte string of all the values of a header within the Headers object with given name. If the requested header does not exist in the Headers object, it returns null.

Returns: string - Value of the retrieved header.
See: Headers - get

Param
Type
Description
name
string
Name of the HTTP header.

has(name)

Indicates whether the Headers object contains a certain header.

Returns: boolean - Indicates whether the Headers object contains the input name.
See: Headers - has

Param
Type
Description
name
string
Name of the HTTP header.

set(name, value)

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

See: Headers - set

Param
Type
Description
name
string
Name of the HTTP header.
value
string
Value of the HTTP header.

forEach(callbackFn, thisArg)

Executes a callback function once per each key/value pair in the Headers object.

See: Headers - forEach

Param
Type
Description
callbackFn
function
Function to execute for each entry in the map. It takes the following arguments.
thisArg
Object
Value to use as this when executing callback.

keys()

Returns an iterator object allowing to go through all keys contained in the Headers object.

Returns: iterator - Iterator.
See: Headers - keys

values()

Returns an iterator object allowing to go through all values contained in the Headers object.

Returns: iterator - Iterator.
See: Headers - values

entries()

Returns an iterator object allowing to go through all key/value pairs contained in the Headers object.

Returns: iterator - Iterator.
See: Headers - entries