Gets the total number of characters that are available for rendering within the current element.
retVal = object.getNumberOfChars();
This method has no parameters.
- Scalable Vector Graphics: Text, Section 10.17.1
The total number of characters includes referenced characters from
tref reference, regardless of whether they are rendered.
The total number of characters is effectively equivalent to the length of the textContent attribute from the DOM Level 3 Core specification (section 1.4), if that attribute also expands