adi961/moment

Parse, validate, manipulate, and display dates in javascript.

moment's Issues

Fix critical problem with century

Critical problem when calling century.

Wrong date returned after adding a century

After adding a century to an existing date, the date object isn't valid anymore.

Support for adding and subtracting centuries

Is your feature request related to a problem? Please describe.
For my current project, I need methods to add and subtract centuries of a date.
Describe the solution you'd like
The already existent functions for adding and subtract should be able to accept a parameter for century. For example moment().add(2, 'century'). And a shorthand C

Describe alternatives you've considered
It would be possible to add or subtract by using moment().add(<number of years> * 100, 'years')

Additional context
For implementing this feature the constructor in src/lib/duration/constructor.js has to be changed to support centuries. A file similar to src/lib/units/century.js has to be created and imported in src/lib/units/units.js

Add/Subtract centuries functionality

Is your feature request related to a problem? Please describe.
I'm currently working on a web project for an history learning plattform and therefore I want to create an interactive timeline which is based on dates. For this feature I need the ability to add/subtract centuries to an existing moment object.

Describe the solution you'd like
I need the existing functionality "add"/"subtract" with the possibility to hand over centuries instead of days, hours, weeks, etc as a parameter.

Example:
var date = moment(); // -> 2017-06-07
date.subtract(1, 'c');
// date -> 1917-06-07

Describe alternatives you've considered
At the moment I'm using the years function and always add/subtract 100 years but it would be easier to use a century functionality

Adding centuries

Add the "centuries" unit so that you can add / subtract entire centuries.