CharacterData: replaceData() method

The replaceData() method of the CharacterData interface removes a certain number of characters of the existing text in a given CharacterData node and replaces those characters with the text provided.

Syntax

replaceData(offset, count, data)

Parameters

offset: The number of characters from the start of the data to insert at. 0 is the first character of the string.
count: The number of characters to replace with the provided data.
data: The data to insert.

Return value

None.

Exceptions

IndexSizeError DOMException: Thrown if offset or count is negative or offset is greater than the length of the contained data.

Example

html

<span>Result: </span>A long string.

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

textNode.replaceData(2, 4, "replaced");