Javascript for validating a date

Javascript for validating a date.

Pass month, day, year as parameters. This function will return true if the date is valid.

// // arunmvishnu.blogspot.com

function validDate(month, day, year){ if(month =='0' || day =='0' || year=='0'){ return false; } switch(month) { case '1': //** jan case '3': //** March case '5': //** May case '7': //** July case '8': //** Aug case '10': //** Nov case '12': //** Dec if(day>=1 && day<=31){ return true; } else { return false; } case '4': //** APRIL case '6' : //** JUNE case '9' : //** SEPTEMBER case '11' : //** NOVEMBER if(day>=1 && day<=30){ return true; } else { return false; } case '2' : if(isLeapYear(year)){ if(day>=1 && day<=29){ return true; } } else if(day>=1 && day <= 28){ return true; } else { return false; } default: return false; } }

function isLeapYear(year){ // Checking wdr a year is leap year or not if(year % 4 == 0 && (year % 100 != 0 || year % 400 == 0)){ return true; } else { return false; } }

The full js file can be dodnloaded from here