年龄

function displayDate()
 {    
     var d1 = new Date( "1989-11-30");  //Input from date
     var d2 = new Date();               //To date   here it is set to current-date
     var Months = d2.getMonth() - d1.getMonth();
     var Years = d2.getFullYear() - d1.getFullYear();
     var Days = d2.getDate() - d1.getDate();
     Months=(d2.getMonth()+12*d2.getFullYear())-(d1.getMonth()+12* d1.getFullYear());
     var MonthOverflow = 0;
     if(Months - (Years*12) < 0)
            MonthOverFlow = -1;
     else
            MonthOverFlow = 1;
     if( MonthOverFlow<0 )
            Years= Years - 1;
     Months= Months-(Years*12);
     var LastDayOfMonth = new Date(d2.getFullYear(), d2.getMonth() + 1, 0, 23, 59, 59);
     LastDayOfMonth= LastDayOfMonth.getDate() ;
     if(MonthOverFlow <0 && (d1.getDate() > d2.getDate()))
     {
         Days= LastDayOfMonth  + (d2.getDate() -d1.getDate()) - 1;
     }
     else
         Days= d2.getDate() - d1.getDate();
     document.getElementById("demo").innerHTML=Years+" Year(s), " + Months + " Month(s), " + Days + "Day(s)";
 }