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.

See full compatibility

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

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.

const span = document.querySelector("span");
const textNode = span.nextSibling;

textNode.insertData(2, "long ");

Specifications

Specification
DOM # dom-characterdata-insertdata

Browser compatibility

	desktop					mobile
	Chrome	Edge	Firefox	Opera	Safari	Chrome Android	Firefox for Android	Opera Android	Safari on iOS	Samsung Internet	WebView Android	WebView on iOS
`insertData`	Chrome – Full support Chrome 1 (Release date: 2008-12-11) footnote Full support	Edge – Full support Edge 12 (Release date: 2015-07-29) footnote Full support	Firefox – Full support Firefox 1 (Release date: 2004-11-09) footnote Full support	Opera – Full support Opera 12.1 (Release date: 2012-11-20) footnote Full support	Safari – Full support Safari 1 (Release date: 2003-06-23) footnote Full support	Chrome Android – Full support Chrome Android 18 (Release date: 2012-06-27) footnote Full support	Firefox for Android – Full support Firefox for Android 4 (Release date: 2011-03-29) footnote Full support	Opera Android – Full support Opera Android 12.1 (Release date: 2012-10-09) footnote Full support	Safari on iOS – Full support Safari on iOS 1 (Release date: 2007-06-29) footnote Full support	Samsung Internet – Full support Samsung Internet 1 (Release date: 2013-04-27) footnote Full support	WebView Android – Full support WebView Android 4.4 (Release date: 2013-12-09) footnote Full support	WebView on iOS – Full support WebView on iOS 1 (Release date: 2007-06-29) footnote Full support

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Full support: Full support

CharacterData: insertData() method

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