I have the following :
var fit_start_time = $("#fit_start_time").val(); //2013-09-5
var fit_end_time = $("#fit_end_time").val(); //2013-09-10
if(Date.parse(fit_start_time)>=Date.parse(fit_end_time)){
alert("Please select a different End Date.");
}
The above code doesn't work. Is there any other solution to the above one?
formatting date as per Where can I find documentation on formatting a date in JavaScript? also dint work for me.
It's quite simple:
if(new Date(fit_start_time) <= new Date(fit_end_time))
{//compare end <=, not >=
//your code here
}
Comparing 2 Date instances will work just fine. It'll just call valueOf implicitly, coercing the Date instances to integers, which can be compared using all comparison operators. Well, to be 100% accurate: the Date instances will be coerced to the Number type, since JS doesn't know of integers or floats, they're all signed 64bit IEEE 754 double precision floating point numbers.
< and ==. That, and == won't coerce the objects to integers, so you're comparing two distinct objects, and therefore will always be false (try new Date('2013-09-1') == new Date('2013-09-1') will always be false). Your fiddle should've been this
To comapre dates of string format (mm-dd-yyyy).
var job_start_date = "10-1-2014"; // Oct 1, 2014
var job_end_date = "11-1-2014"; // Nov 1, 2014
job_start_date = job_start_date.split('-');
job_end_date = job_end_date.split('-');
var new_start_date = new Date(job_start_date[2],job_start_date[0],job_start_date[1]);
var new_end_date = new Date(job_end_date[2],job_end_date[0],job_end_date[1]);
if(new_end_date <= new_start_date) {
// your code
}
-1 from the month part of your Date object ? correct me if I am wrong.
As in your example, the fit_start_time is not later than the fit_end_time.
Try it the other way round:
var fit_start_time = $("#fit_start_time").val(); //2013-09-5
var fit_end_time = $("#fit_end_time").val(); //2013-09-10
if(Date.parse(fit_start_time) <= Date.parse(fit_end_time)){
alert("Please select a different End Date.");
}
Update
Your code implies that you want to see the alert with the current variables you have. If this is the case then the above code is correct. If you're intention (as per the implication of the alert message) is to make sure their fit_start_time variable is a date that is before the fit_end_time, then your original code is fine, but the data you're getting from the jQuery .val() methods is not parsing correctly. It would help if you gave us the actual HTML which the selector is sniffing at.
try with new Date(obj).getTime()
if( new Date(fit_start_time).getTime() > new Date(fit_end_time).getTime() )
{
alert(fit_start_time + " is greater."); // your code
}
else if( new Date(fit_start_time).getTime() < new Date(fit_end_time).getTime() )
{
alert(fit_end_time + " is greater."); // your code
}
else
{
alert("both are same!"); // your code
}
> and = comparisons into two steps.. wierd.Date instances over and over again, please, don't... just assing them to fit_start_time and fit_end_time, to avoid pointless overheadlet Date1 = "04-18-2023" // 18 April, 2023
let Date2 = "05-01-2023" // 01 May, 2023
if(new Date(Date1) < new Date(Date2))
{
console.log("Date1 is less than Date2")
}
This is already in :
Age from Date of Birth using JQuery
or alternatively u can use Date.parse() as in
var date1 = new Date("10/25/2011");
var date2 = new Date("09/03/2010");
var date3 = new Date(Date.parse(date1) - Date.parse(date2));
Try it the other way:
var start_date = $("#fit_start_time").val(); //05-09-2013
var end_date = $("#fit_end_time").val(); //10-09-2013
var format='dd-MM-y';
var result= compareDates(start_date,format,end_date,format);
if(result==1)/// end date is less than start date
{
alert('End date should be greater than Start date');
}
OR:
if(new Date(start_date) >= new Date(end_date))
{
alert('End date should be greater than Start date');
}
compareDates function if your above code has to work.var startDate= "11-11-2014"; // 10th Nov 2021
var endDate= "11-1-2014";
startDate= startDate.split('-');
endDate= endDate.split('-');
var newStartDate= new Date(startDate[2],startDate[0]-1,startDate[1]);
var newEndDate= new Date(endDate[2],endDate[0]-1,endDate[1]);
if(newEndDate<= newStartDate) {
}
