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] | 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.