DOMCharacterData::insertData Insert a string at the specified UTF-8 codepoint offset &reftitle.description; public boolDOMCharacterData::insertData intoffset stringdata Inserts string data at position offset. &reftitle.parameters; offset The character offset at which to insert. data The string to insert. &reftitle.returnvalues; &return.success; &reftitle.errors; May throw a DOMException with the following error codes: DOM_INDEX_SIZE_ERR Raised if offset is negative or greater than the number of UTF-8 codepoints in data. &reftitle.seealso; DOMCharacterData::appendData DOMCharacterData::deleteData DOMCharacterData::replaceData DOMCharacterData::substringData