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.