Remove Seconds/ Milliseconds from Date and convert to ISO String?

In JavaScript, you can remove seconds and milliseconds from a Date object and convert it to an ISO string format. This is useful when you need precise time formatting without the seconds component.

Getting the Current Date

First, let's create a Date object with the current date and time:

var currentDate = new Date();
console.log("The current date is: " + currentDate);

The current date is: Sat Aug 01 2020 18:20:09 GMT+0530 (India Standard Time)

Removing Seconds and Milliseconds

Use the setSeconds() method to set both seconds and milliseconds to 0:

currentDate.setSeconds(0, 0);
console.log("Date after removing seconds: " + currentDate);

Date after removing seconds: Sat Aug 01 2020 18:20:00 GMT+0530 (India Standard Time)

Converting to ISO String

The toISOString() method converts the Date object to ISO 8601 format (UTC timezone):

var isoString = currentDate.toISOString();
console.log("ISO String: " + isoString);

ISO String: 2020-08-01T12:50:00.000Z

Complete Example

var currentDate = new Date();
console.log("The current date is: " + currentDate);

// Remove seconds and milliseconds
currentDate.setSeconds(0, 0);
console.log("After removing seconds from date:");
console.log(currentDate.toISOString());

The current date is: Sat Aug 01 2020 18:20:09 GMT+0530 (India Standard Time)
After removing seconds from date:
2020-08-01T12:50:00.000Z

Key Points

• setSeconds(0, 0) sets both seconds and milliseconds to zero
• toISOString() returns the date in ISO 8601 format (YYYY-MM-DDTHH:mm:ss.sssZ)
• The ISO string is always in UTC timezone (indicated by 'Z')
• Even after removing seconds, the ISO string shows ".000Z" for milliseconds

Conclusion

Using setSeconds(0, 0) followed by toISOString() effectively removes seconds and milliseconds from a Date object while converting it to a standardized ISO format. This approach is useful for time comparisons and database storage.