validating time

[narinas]

var err_str="";
function validate_grid(value,id,ind)
	{
    	if(ind==1 || ind==2)
		{
			var patt=/^([0][0-9]|[0-9]|[1][0-9]|[2][0-3])[:]{1}[0-5][0-9]$/;
			if(!patt.test(value))
			{
				mygrid.setCellTextStyle(id,ind,"background-color:yellow;");
				if(err_str!="")
					err_str+="\n"+(ind+1)+".Enter numbers and (:) only..[ex.05:00 24hr format]";
				else
					err_str=(ind+1)+".Enter numbers and (:) only..[ex.05:00 24hr format]";
				return false;
			}
			else
			{
				mygrid.setCellTextStyle(id,ind,"background-color:white;");
				return true;
			}
		}
}

here ind==1 is from-time and ind==2 is to-time,from-time should not be greater than to-time and to-time should not be less than from-time
ex:05:00-09:00(true)
09:00-08:00(false).

[acoder]

One way to do this is to use the Date object:

1. Create 2 dates using the from/to times
2. Compare them

[narinas]

can u show me how to do that using the above format.

[acoder]

As I mentioned, it's one way. See below if you want to use dates.

Another method is to split on the ":" to get the hours and minutes and then compare the hours. If equal, compare the minutes. That should be straightforward . If not, post your attempt.

If using the Date method, see https://developer.mozilla.org/en/Jav...l_Objects/Date for info. on Dates.
It has enough to get you started on creating a Date (split on ":" and create using either new or set** methods.

To compare, use the comparison operator (e.g. < or >) on 2 Date objects.