src/constraint/dayofweekcount.js
function(d) {
    return d.dc || (d.dc = Math.floor((later.D.val(d)-1)/7)+1);
  }
function(d) {
    return d.dc || (d.dc = Math.floor((later.D.val(d)-1)/7)+1);
  }
function ( d ) { return d . dc || ( d . dc = Math . floor ( ( later . D . val ( d ) - 1 ) / 7 ) + 1 ) ; }
The day of week count value of the specified date.

@param {Date} d: The date to calculate the value of
The day of week count value of the specified date .