This is an experimental technology
Because this technology's specification has not stabilized, check the compatibility table for usage 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 specification 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.)
response.formData().then(function(formdata) {
// do something with your formdata
}); None.
A promise that resolves with a FormData object.
TBD.
| Specification | Status | Comment |
|---|---|---|
| Fetch The definition of 'formData()' in that specification. | Living Standard |
| Feature | Chrome | Firefox (Gecko) | Internet Explorer | Opera | Safari (WebKit) |
|---|---|---|---|---|---|
| Basic support | 42 [1] | 39 (39) [2] | No support | 29 [3] | No support |
| Request.formData() | No support | No support | No support |
| Feature | Android | Firefox Mobile (Gecko) | Firefox OS (Gecko) | IE Phone | Opera Mobile | Safari Mobile | Chrome for Android |
|---|---|---|---|---|---|---|---|
| Basic support | No support | No support | No support | No support | No support | No support | No support |
[1] Behind a preference in version 41.
[2] Behind a preference starting with version 34.
[3] Behind a preference in version 28.
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https://developer.mozilla.org/en-US/docs/Web/API/Body/formData