Fetch basic concepts
GlobalFetch.fetch()
The fetch() method of the GlobalFetch mixin starts the process of fetching a resource. This returns a promise that resolves to the Response object representing the response to your request.
Headers
Request
The Request interface of the Fetch API represents a resource request.
Response
The Response interface of the Fetch API represents the response to a request.
ReadableByteStream
Body
Body.blob()
Body.bodyUsed
Body.json()
Body.text()
Headers.entries()
Headers.get()
Headers.getAll()
Headers()
Headers.keys()
Headers.values()
Request.cache
Request.clone()
The clone() method of the Request interface creates a copy of the current Request object.
Request.context
The context read-only property of the Request interface contains the context of the Request (e.g., audio, image, iframe). This defines what sort of resource is being fetched.