CODEWITHSUNDEEP
javascriptdate
user3219243
user3219243

Reputation: 81

Javascript returns me wrong day

I have to write function which determines which day of week particular date is. I wrote following code, but it returns in 99% cases wrong day. Can you explain me why?

var day = 1, month = 1, year = 2016;

function whatDay(day, month, year) {
    var myDate = new Date();
    myDate.setFullYear(year);
    myDate.setMonth(month);
    myDate.setDate(day);

    console.log( myDate.getDay() );
}

whatDay(day, month, year);

Upvotes: 1

Views: 169

Answers (3)

Rahul Tripathi
Rahul Tripathi

Reputation: 172608

I guess you are confused as to how the getDay works. See the docs:

The getDay() method returns the day of the week for the specified date according to local time, where 0 represents Sunday.

So the day starts from 0 index representing Sunday. 1 as Monday and so on based on the local time.

Just to add, that similarly the months are also indexed from 0. So 0 is for January and so on.

Upvotes: 3

brk
brk

Reputation: 50346

which day of week particular date

It seems you are looking for weekday like Sunday,Monday & so on.+

If it is so then following snippet can be useful

var day = 1, month = 1, year = 2016;

function whatDay(day, month, year) {
    var myDate = new Date();
    myDate.setFullYear(year);
    myDate.setMonth(month);
    myDate.setDate(day);

   var weekday = new Array(7);
    weekday[0] = "Sunday";
    weekday[1] = "Monday";
    weekday[2] = "Tuesday";
    weekday[3] = "Wednesday";
    weekday[4] = "Thursday";
    weekday[5] = "Friday";
    weekday[6] = "Saturday";

   var n = weekday[myDate.getDay()]
   console.log(n); //Monday
}

whatDay(day, month, year);

jsfiddle

Upvotes: 3

user3219243
user3219243

Reputation: 81

Problem solved. I know how getDay() works, however I didn't know that it counts months from 0 to 11. Thanks @Amadan

Upvotes: 0

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