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javascriptapiecmascript-6ecmascript-2016

Is the Fetch API an ECMAscript feature?

I've looked through the MDN resources here as well as here, as well as the WhatWg Fetch Spec, and for all that I can't figure out if the Fetch API is part of ECMAScript 5, 6, 7 or otherwise.

All I can tell is that it isn't implemented consistently across browsers, and in some cases is not supported at all.

Yet the spec definitely defines Fetch as Javascript:

The Fetch Standard also defines the fetch() JavaScript API

Source: link

Is the Fetch API simply a proposal that is not on the books yet for ES 7/8, or is it actually part of ES6/7/8 and my Googling skills have failed me?

Solution

  • No. It's part of the Web platform API defined by the standards bodies WHATWG and W3C.

    The various objects that implement the Fetch API are "host objects". i.e. objects exposed to userland JavaScript that are provided by the application hosting the runtime (usually a browser).