Returns the current count information.
None.
First get a reference to the client-side editor:
var editor = $find('<%= Editor.ClientID %>');
Then use it to get the current count status information:
var countStatus = editor.GetCountStatus();
If not null, do something useful with it:
if (countStatus && countStatus.characters)
{
if (countStatus.characters.count >
countStatus.characters.limit)
...
}