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

Update compatibility data on GitHub
DesktopMobile
ChromeEdgeFirefoxInternet ExplorerOperaSafariAndroid webviewChrome for AndroidFirefox for AndroidOpera for AndroidSafari on iOSSamsung Internet
formData
Experimental
Chrome Full support 60Edge Full support ≤79Firefox Full support 39
Full support 39
Full support 34
Disabled
Disabled From version 34: this feature is behind the dom.fetch.enabled preference. To change preferences in Firefox, visit about:config.
IE No support NoOpera Full support 47Safari Full support 10WebView Android Full support 60Chrome Android Full support 60Firefox Android No support NoOpera Android Full support 44Safari iOS Full support YesSamsung Internet Android Full support 8.0

Legend

Full support  
Full support
No support  
No support
Experimental. Expect behavior to change in the future.
Experimental. Expect behavior to change in the future.
User must explicitly enable this feature.
User must explicitly enable this feature.

See also