This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
createComment() creates a new comment node, and returns it.
createComment(data)
dataA string containing the data to be added to the Comment.
A new Comment object.
const doc = new DOMParser().parseFromString("<xml></xml>", "application/xml");
const comment = doc.createComment(
"This is a not-so-secret comment in your document",
);
doc.querySelector("xml").appendChild(comment);
console.log(new XMLSerializer().serializeToString(doc));
// Displays: <xml><!--This is a not-so-secret comment in your document--></xml>
| Specification |
|---|
| DOM> # ref-for-dom-document-createcomment①> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
createComment |
1 | 12 | 1 | ≤12.1 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
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https://developer.mozilla.org/en-US/docs/Web/API/Document/createComment