If you run this JavaScript function on the 31st of a month, the result will be a month off. The best part is that this is the intended behvaior. JavaScript is a cursed language.
fedilink
30
If you run this JavaScript function on the 31st of a month, the result will be a month off. The best part is that this is the intended behvaior. JavaScript is a cursed language.
fedilink
function getMonthName(monthNumber) {
  const date = new Date();
  date.setMonth(monthNumber - 1);

  return date.toLocaleString([], { month: 'long' });
}

The current day of month will have an impact on the behavior of this method. Conceptually it will add the number of days given by the current day of the month to the 1st day of the new month specified as the parameter, to return the new date. For example, if the current value is 31st January 2016, calling setMonth with a value of 1 will return 2nd March 2016. This is because in 2016 February had 29 days.

@towerful@programming.dev
link
fedilink
3•
edit-2
1Y

The date API is like the original rip of the Java date API. Barely changed, and totally backwards compatible nonsense.

Temporal is the new JavaScript/ECMAScript date API.
It’s stage 3, and likely stable (just a few kinks being worked out). So you could polyfill it for production.
https://github.com/tc39/proposal-temporal

@erogenouswarzone@lemmy.ml
link
fedilink
English
2•1Y

Speaking of Java RipS. How annoying is it the JS has left Java in the dust as far as looser standards?

Developing in Java: YOU FORGOT A SEMI-COLON ARE YOU CRAZY?! HOW IS THE COMPILER SUPPOSED TO KNOW WHAT TO DO?!

Developing in JS: Who gives a fuck about semi-colons?

Create a post

Post funny things about programming here! (Or just rant about your favourite programming language.)

Rules:

  • Posts must be relevant to programming, programmers, or computer science.
  • No NSFW content.
  • Jokes must be in good taste. No hate speech, bigotry, etc.
  • 1 user online
  • 77 users / day
  • 211 users / week
  • 413 users / month
  • 2.92K users / 6 months
  • 1 subscriber
  • 1.53K Posts
  • 33.8K Comments
  • Modlog