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Body.formData

The formData() method of the Body mixin takes a Response stream and reads it to completion. It returns a promise that resolves with a FormData object.

Note: This is mainly relevant to service workers. If a user submits a form and a service worker intercepts the request, you could for example call formData() on it to obtain a key-value map, modify some fields, then send the form onwards to the server (or use it locally).

Syntax

response.formData()
.then(function(formdata) {
  // do something with your formdata
});

Parameters

None.

Return value

A Promise that resolves with a FormData object.

Example

TBD.

Specifications

Specification	Status	Comment
Fetch The definition of 'formData()' in that specification.	Living Standard

Browser compatibilityUpdate compatibility data on GitHub

	Desktop
	Chrome	Edge	Firefox	Internet Explorer	Opera	Safari
Basic support	60	?	39 39 34 Disabled Disabled From version 34: this feature is behind the `dom.fetch.enabled` preference. To change preferences in Firefox, visit about:config.	No	47	No

	Mobile
	Android webview	Chrome for Android	Edge Mobile	Firefox for Android	Opera for Android	iOS Safari	Samsung Internet
Basic support	60	60	?	No	47	No	No