Text splitText(unsigned long offset) throws DOMException;
offset
The character position at which to split the Text node.
The Text node that was split from this node.
This method may throw a DOMException with one of the following code values:
INDEX_SIZE_ERR
offset is negative or greater than the length of the Text or Comment node.
NO_MODIFICATION_ALLOWED_ERR
The node is read-only and may not be modified.
This method splits a Text node in two at the specified offset. The original Text node is modified so that it contains all text content up to, but not including, the character at position offset. A new Text node is created to contain all the characters from (and including) the position offset to the end of the string. This new Text node is the return value of the method. Additionally, if the original Text node has a parentNode, the new node is inserted into this parent node immediately after the original node.
The CDATASection interface inherits from Text, and this splitText( ) method can also be used with CDATASection nodes, in which case the newly created node is a CDATASection rather than a Text node.