CharacterData: substringData() 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 substringData() method of the CharacterData interface returns a portion of the existing data, starting at the specified index and extending for a given number of characters afterwards.

Syntax

js
substringData(offset, count)

Parameters

offset

The index of the first character to include in the returned substring. 0 is the first character of the string.

count

The number of characters to return.

Return value

A string with the substring.

Exceptions

IndexSizeError DOMException

Thrown if offset + count is larger than the length of the contained data.

Specifications

Specification
DOM
# dom-characterdata-substringdata

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
substringData

Legend

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

Full support
Full support