CharacterData: insertData() method

Baseline Widely available

This feature is well established and works across many devices and browser versions. It’s been available across browsers since July 2015.

The insertData() method of the CharacterData interface inserts the provided data into this CharacterData node's current data, at the provided offset from the start of the existing data. The provided data is spliced into the existing data.

Syntax

js
insertData(offset, data)

Parameters

offset

The offset number of characters to insert the provided data at. 0 is the first character of the string.

data

The data to insert.

Return value

None.

Exceptions

IndexSizeError DOMException

Thrown if offset is negative or greater than the length of the contained data.

Example

html
<span>Result: </span>A string.
js
const span = document.querySelector("span");
const textNode = span.nextSibling;

textNode.insertData(2, "long ");

Specifications

Specification
DOM
# dom-characterdata-insertdata

Browser compatibility

Report problems with this compatibility data on GitHub
desktopmobile
Chrome
Edge
Firefox
Opera
Safari
Chrome Android
Firefox for Android
Opera Android
Safari on iOS
Samsung Internet
WebView Android
WebView on iOS
insertData

Legend

Tip: you can click/tap on a cell for more information.

Full support
Full support

See also