In c# it's enough to do:

new DateTime(year, month, day);

How should I do in JS?

Is the following code correct?

var birthYear = parseInt($("#BirthYear").valueOf());
var birthMonth = parseInt($("#BirthMonth").valueOf());
var birthDay = parseInt($("#BirthYear").valueOf());

var birthDate = new Date(birthYear, birthMonth + 1, birthDay);

In c# it's enough to do:

new DateTime(year, month, day);

How should I do in JS?

Is the following code correct?

var birthYear = parseInt($("#BirthYear").valueOf());
var birthMonth = parseInt($("#BirthMonth").valueOf());
var birthDay = parseInt($("#BirthYear").valueOf());

var birthDate = new Date(birthYear, birthMonth + 1, birthDay);

• javascript
• c#
• jquery

• 3 var DateTime = new Date(year, month, day, hours, minutes, seconds, milliseconds); ? – briosheje Commented Oct 14, 2014 at 14:46
• Yes, I couldnt find this question here.. if it's not a dup let's answer and I will accept! – Revious Commented Oct 14, 2014 at 14:48
• 1 There are already some answer there Revious, I'm sorry but I don't think I deserve any reputation for such a basic question that can be answered through google or whatever kind of thing. The only important thing is that you got it ;) – briosheje Commented Oct 14, 2014 at 14:49
• 3 Everyone wrote something correct down there, just choose the answer you prefere. The only important thing, again, is that you got it, regardless how precise the answer is, for such a basic task just check how simile is the javascript solution pared to the C# one ;). In any case yes, month January is 0, not that obvious indeed :). For more (VERY) precise infos, check the official MDN: developer.mozilla/en-US/docs/Web/JavaScript/Reference/… .. About the month, it is said that: prntscr./4w3qj9 <-- "from 0 to 11" – briosheje Commented Oct 14, 2014 at 14:52
• 2 Re your edit: you need birthMonth - 1 (assuming 1 <= birthMonth <= 12). – 001 Commented Oct 14, 2014 at 15:04

3 Answers 3

var whateverName = new Date(year, month, day);

Month is 0 indexed, so you need to put in 0 if you want January etc.

You can also enter negative months and dates. This will "count backwards" that many months or days.

This allows you to get the last date of a month by entering the month ahead of it and then 0 as the day.

var dateObject = new Date();

dateObject.getFullYear() + " " + dateObject.getMonth() + 1 + " " + dateObject.getDate();

JavaScript Dates

new Date()
new Date(milliseconds)
new Date(dateString)
new Date(year, month, day, hours, minutes, seconds, milliseconds)