Cancel node-schedule event after it has been set

I am planning on using node-schedule to set up push notifications for appointment reminders as follows:

var schedule = require('node-schedule');
var date = req.body.date;   // Date for reminder from client request 
var j = schedule.scheduleJob(date, function(){
    // Send push notification
});

Now I know you can cancel the event by calling cancel():

j.cancel()

However, how can I refer to that specific job to cancel if the user from the client side decides to change the appointment to a different date later on?

For example user wants to set a reminder for December 25th 2015, then a few days later they decide to change the reminder to December 24th, 2015.

How can I reference the event that was scheduled for December 25th, 2015 and cancel it and create a new one for December 24th, 2015.

Thanks in advance for your help!

[santigimeno]

@ShahNewazKhan I’m not sure I understand correctly what the problem is:

• You have problems getting a reference to a job by the scheduled date, or
• You need to be able to re-schedule a specific job.

In case your problem is the first one, I don’t think there’s a way to do that: you could have multiple job scheduled for the same time. In order to retrieve a specific job, you could always create it with a unique name and you could always retrieve it later via that unique name:

var j = schedule.scheduleJob(unique_name, date, function() {
});
// later on
var my_job = schedule.scheduledJobs[unique_name];

In case you want to be able to reschedule the job, there’s no specific method, but you can do:

var j = schedule.scheduleJob(date, function(){
    // Send push notification
});

// later on
var job_method = j.job;
j.cancel();
var new_job = schedule.scheduleJob(date, job_method);

[tejasmanohar]

long-hand is here https://github.com/node-schedule/node-schedule/issues/192#issuecomment-150762650 @esatterwhite