W3cubDocs

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 compatibility

Feature	Chrome	Firefox (Gecko)	Internet Explorer	Opera	Safari (WebKit)
Basic support	60	39 (39) [1]	No support	47	No support

Feature	Android Webview	Chrome for Android	Firefox Mobile (Gecko)	Firefox OS (Gecko)	IE Phone	Opera Mobile	Safari Mobile
Basic support	60	60	No support	No support	No support	47	No support

[1] Behind a preference starting with version 34.