The text in the node.
The length of data.
data
Appends data to the end of the this.data.
this.data
Deletes count characters of this.data starting at offset.
count
offset
Inserts data into this.data at offset.
Removes this from parentNode's children.
this
parentNode
Replaces count characters of text at offset in this.data with data.
Returns a substring of this.data starting at offset and of the specified count of characters.