How can I dynamically and repetitively add time (both hours and minutes) in JavaScript to effectively increment a date object? There are times when I need to add minutes, or hours, or a combination of both - and I want the resulting total time to be returned correctly as an incremented or decremented valid time/date object.
For example, when adding up the hours across table rows/grids, sometimes the duration being added is unknown beforehand. Some cells contain minutes, while others have HH:mm format. The answers on Stack Overflow do not address incrementing with dynamic times or handling date manipulations like moving the date forward or backward for negative deductions.
I've been manually performing these calculations and missing many scenarios.
var newDateObj = new Date(oldDateObj.getTime() + diff*60000);How can I achieve this dynamically and have the newDateObj accurately auto-increment hours or days?
var newDateObj = oldDateObj + AddMinsTimeObj; // Adding minutes
var newDateObj = oldDateObj + AddHoursTimeObj; // Two hours
var newDateObj = oldDateObj + AddHoursMinsTimeObj; // 1 hour and 40 mins
var newDateObj = oldDateObj + AddDaysHoursMinsTimeObj; // Days, hours, and minutes
In other programming languages like Java and C#, you can simply add time, dates, and time spans using functions like
System.DateTime addDynamicTimeOrDuration = today.Add(duration);Update 1: Many suggestions point towards using moment.js for durations, but according to the documentation links provided, creating durations directly from datetime objects may not be supported.
Update 2:
I am attempting the following code snippet, getting closer to a solution
moment().add($this.val + moment().diff(date1, date1))Essentially, I want a function that allows me to add time intervals together seamlessly and obtain correct results, regardless of whether the input specifies minutes, hours, or days. This should ideally be handled by a preexisting function in the base library, making it easier to manage complex date calculations in JavaScript.