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Javascript - Validate number of days in a given month

/ Published in: JavaScript
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How would you validate the number of days in a given month?

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  1. function validateDate( intDay, intMonth, intYear )
  2. {
  3.     return intMonth >= 1 && intMonth <= 12 && intDay > 0 && intDay <= daysInMonth( intMonth, intYear );
  4. }
  5.  
  6. function daysInMonth( intMonth, intYear )
  7. {
  8.     switch ( intMonth )
  9.     {
  10.         case 2:
  11.             return (intYear % 4 == 0 && intYear % 100) || intYear % 400 == 0 ? 29 : 28;
  12.         case 4:
  13.         case 6:
  14.         case 9:
  15.         case 11:
  16.             return 30;
  17.         default :
  18.             return 31
  19.     }
  20. }

URL: http://stackoverflow.com/questions/1433030/validate-number-of-days-in-a-given-month

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