fetch method

Initiates the fetching of a resource.

Syntax

*object.*fetch(input, init)

Parameters

• input
  Type: USVString or Request

  Defines the resource that will be fetched. This can either be a Request object or a USVString specifying the URL of the resource.

• init [optional]
  Type: RequestInit

  An options object that specifies custom settings as defined in the RequestInit dictionary.

Return value

Type: Promise<Response>

A promise for a Response object.

Standards information

• Fetch

Remarks

Dictionary of RequestInit members:

Dictionary Member	Type	Description
method	ByteString	The method of the request.
headers	HeaderInit	A headers object to be added to the request.
body	BodyInit	A body to be added to the request.
referrer	USVString	The referrer of the request.
referrerPolicy	ReferrerPolicy	The referrer policy of the request.
mode	RequestMode	The mode of the request.
credentials	RequestCredentials	The credentials of the request.
cache	RequestCache	The cache mode of the request.
redirect	RequestRedirect	The redirect mode of the request.
integrity	DOMString	The integrity metadata of the request.

 

RequestType enumeration:

• ""
• "audio"
• "font"
• "image"
• "script"
• "track"
• "video"

RequestDestination enumeration:

• ""
• "document"
• "sharedworker"
• "subresource"
• "unknown"
• "worker"

RequestMode enumeration:

• "navigate"
• "same-origin"
• "no-cors"
• "cors"

RequestCredentials enumeration:

• "omit"
• "same-origin"
• "include"

RequestCache enumeration:

• "default"
• "no-store"
• "reload"
• "no-cache"
• "force-cache"

RequestRedirect enumeration:

• "follow"
• "error"
• "manual"

See also

WorkerGlobalScope

Window