This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for the proper prefixes to use in various browsers. Also note that the syntax and behavior of an experimental technology is subject to change in future versions of browsers as the spec changes.
Draft
This page is not complete.
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.
Returns
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 |
42 [1] |
39 (39) [2] | Not supported |
29 [3] |
Not supported |
Request.formData() | Not supported | Not supported | Not supported |
Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
---|---|---|---|---|---|---|---|
Basic support | Not supported | Not supported | Not supported | Not supported | Not supported | Not supported | Not supported |
[1] Behind a preference in version 41.
[2] Behind a preference starting with version 34.
[3] Behind a preference in version 28.