This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.
The appendData() method of the CharacterData interface adds the provided data to the end of the node's current data.
appendData(data)
dataThe data to append to the current node.
None.
<span>Result: </span>A text
const span = document.querySelector("span");
const textNode = span.nextSibling;
textNode.appendData(" - appended text.");
| Specification |
|---|
| DOM> # dom-characterdata-appenddata> |
| Desktop | Mobile | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Chrome | Edge | Firefox | Opera | Safari | Chrome Android | Firefox for Android | Opera Android | Safari on IOS | Samsung Internet | WebView Android | WebView on iOS | |
appendData |
1 | 12 | 1 | ≤12.1 | 1 | 18 | 4 | ≤12.1 | 1 | 1.0 | 4.4 | 1 |
CharacterData.deleteData(), CharacterData.insertData(), CharacterData.replaceData()
CharacterData.data
© 2005–2025 MDN contributors.
Licensed under the Creative Commons Attribution-ShareAlike License v2.5 or later.
https://developer.mozilla.org/en-US/docs/Web/API/CharacterData/appendData