Number of elements in an API instance's result set.
This option defines the number of elements that are stored in an API instance's result set.
In this case, this property is basically the same as the
Array.length property. For more information about the original property, please refer to the Mozilla MDN documentation for
This option can be given in the following type(s):
length to determine how many rows there are in the table:
var table = $('#example').DataTable(); alert( 'Number of row entries: '+ table .column( 0 ) .data() .length );