date-fns VS js-joda

datefns is an alternative library that has a different philosophy. Rather than using a different type to represent dates, it has you continue using native dates, but provides tons of functions to do common tasks like parsing, formatting and date math.

Good job creating a library. I'd would only like to know what benefit this library provides over more established libraries, such as date-fns? https://date-fns.org/

date-fns is a lightweight library that works with built-in Dates and can perform arithmetic.

Definitely also worth mentioning is date-fns

We are using three libraries inside our projects, which are moment Moment.js, Day.js, and date-fns.

I'd consider using a library to help you out. Maybe something like https://date-fns.org, you could combine isBefore and isAfter to create a isInRange. Once you have that you can loop though your dateArr and for each entry, check if it's in any of your given ranges then increment the count.

OT: moment.js is deprecated, if u can, use date-fns.

Web-site:https://date-fns.org/ Github page: https://github.com/date-fns/date-fns Demo: – License: MIT Github stars: 22.8k Contribution guideline: Yes Date-fns provides the most comprehensive, yet simple and consistent toolset for manipulating JavaScript dates in a browser & Node.js. It works well with modern module bundlers such as webpack, Browserify, or Rollup. Date-fns is built using pure functions and always returns a new date instance instead of changing the passed one. With the support of an amazing community, date-fns has dozens of locales.

So first, a simple example of how this works. Using our "What is your birthday" example, we can mock up this code. Note: I'm using TypeScript because it enforces the concepts at compile time, but the JsJoda library itself enforces the concepts at runtime so that we get the best of both.

Dealing with human dates is non-trivial thanks to localization. The easiest thing to do is to start with something zone agnostic (like UTC or epoch) do your date calculation, and then shift that into the locale you want. date-fns is fine for basic date math, but if you want something more robust, with a more cohesive API, I'd recommend js-joda.

How come the js-joda library is never mentioned in discussions about javascript date/time libraries? its API is perfect and it has been around forever. but instead the community seems to keep inventing more and more new datetime libraries. i don't understand why js-joda seems to be ignored

https://js-joda.github.io/js-joda/

I've been getting by with js joda. Temporal is a welcome addition.

Support for the domain models LocalDate, LocalDateTime, ZonedDateTime, Instant, Duration and Period. Also, supports IANA timezone, adding the plugin @js-joda/timezone you'll have access to the IANA timezone database with all the timezones available.