This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The DocumentType.remove() method removes a document's doctype. If it is already detached from the document, calling remove() does nothing.
remove()
None.
None (undefined).
remove()
document.doctype; // "<!doctype html>' document.doctype.remove(); document.doctype; // null
| Specification |
|---|
| DOM> # ref-for-dom-childnode-remove①> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
remove |
24 | 12 | 23 | 15 | 7 | 25 | 23 | 14 | 7 | 1.5 | 4.4 | 7 |
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https://developer.mozilla.org/en-US/docs/Web/API/DocumentType/remove