Calculating the time difference in seconds between two dates using JavaScript

I am working with dates stored in MongoDB as UTC using Date(), and the format looks like Mon, 02 Apr 2012 20:16:31 GMT.

My goal is to calculate the time difference in total seconds between this date and the current time (in UTC).

I attempted the following approach:

now = new Date();
current_date = new Date(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(), now.getUTCHours(), now.getUTCMinutes(), now.getUTCSeconds());
end_date = obj.end_date (Mon, 02 Apr 2012 20:16:35 GMT);
d = new Date(end_date - current_date);
console.log(d.getSeconds());

However, the result shows 22 for seconds, which is incorrect.

This method also seems overly complex. Is there a more efficient way to achieve this either within MongoDB or using JavaScript?

Any suggestions or advice would be greatly appreciated - thank you!

javascriptmongodb

Answer №1

To calculate the time difference in seconds between two Date objects, you can use the getTime() method to get the timestamps in milliseconds and then divide the difference by 1000.

For example:

const now = new Date();
const currentDate = new Date(now.getUTCFullYear(), now.getUTCMonth(), now.getUTCDate(), now.getUTCHours(), now.getUTCMinutes(), now.getUTCSeconds());
const endDate = new Date(obj.end_date); // Assuming obj.end_date is in the format (Mon, 02 Apr 2012 20:16:35 GMT)
const millisDiff = endDate.getTime() - currentDate.getTime();
console.log(millisDiff / 1000);

Answer №2

(endDate.getTime() - currentDate.getTime()) / 1000

getSeconds() function will only give you the seconds component, excluding minutes and hours.

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