Extracts a substring of data starting at offset, with length count.
Append the string to the end of the character data of the node. Upon success, data provides access to the concatenation of data and the DOMString specified.
Insert a string at the specified offset.
Remove a range of characters from the node. Upon success, data and length reflect the change.
Replace count characters starting at the specified offset with the specified string.
This interface inherits from CharacterData and represents the content of a comment, i.e., all the characters between the starting '<!--' and ending '-->'.