This is a very handy and easily understandable code. There are two different methods, depending upon the type of data that is required as input to the functions:

 function CompareDatesOne(firstdate,seconddate){  //assuming firstdate and seconddate are  //java script date objects  if(firstdateseconddate){     alert("First date is more then Second Date");  }else{     alert("The dates are equal");  }}function CompareDatesTwo(d1,m1,y1,h1,min1,sec1,d2,m2,y2,h2,min2,sec2){ firstdate = new Date(y1,m1,d1,h1,min1,sec1); seconddate = new Date(y2,m2,d2,h2,min2,sec2);  if(firstdateseconddate){     alert("First date is more then Second Date");  }else{     alert("The dates are equal");  }}