Javascript Compare Two Dates And Throw An Alert

I have two dates in DD/MM/YYYY HH:MM:SS format ,i want to compare two dates and throw an alert . I tried the below code,but it is not working. startdate = '14/12/2014 19:00:00';

Solution 1:

You can create a Date using the following constructors:

newDate();
newDate(value);
newDate(dateString);
newDate(year, month[, date[, hour[, minutes[, seconds[, milliseconds]]]]]);

You have used the third of them, where the dateString is a

String value representing a date. The string should be in a format recognized by the Date.parse() method (IETF-compliant RFC 2822 timestamps and also a version of ISO8601).

The string you have provided hasn't the correct format. Hence the corresponding date objects haven't been created.

I would prefer using the last constructor, since I wouldn't have to format correspondingly the strings.

var startDate = newDate(2014,12,14,19,0,0);
var endDate = newDate(2015,1,21,19,0,0);

I swapped the startDate with the endDate, in order we see the alert.

var endDate = newDate(2014,12,14,19,0,0);
var startDate = newDate(2015,1,21,19,0,0);

if(startDate > endDate)
{
    alert("End date cannot be less than start date");
}