This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The HTMLFormElement.encoding property is an alternative name for the enctype element on the DOM HTMLFormElement object.
| Specification |
|---|
| HTML> # dom-fs-encoding> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
encoding |
1 | 12 | 1 | ≤12.1 | 3 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/HTMLFormElement/encoding