Get the day number from moment object javascript

up vote
6
down vote

favorite

I have a moment data object, what i want to do is get the date number, like if 2018-12-31 is given, it should return 365.

What I've currently done is this, but I feel like this is a more brute force approach since I have to run this function over and over again. Is there a more elegant way of doing this through the momentjs library?

var day = 25;
var mon = 12;
var year = 2018;
var sum = 0;
var days = 0;
var month_day = [31,28,31,30,31,30,31,31,30,31,30,31];
for ( var i = 0; i < mon; i++)
 sum += month_day[i];


days = sum - (month_day[mon-1] - day);
console.log(days)

edited Sep 10 at 9:45

Sumurai8

12.2k73059

asked Sep 10 at 3:50

Nimesha Kalinga

1058

I know this is asked for php, but i want to know is, whether is there a elegant way of doing this using moment
â€“Â Nimesha Kalinga
Sep 10 at 3:51

3

Not only brute force, but also incorrect because it ignores leap years.
â€“Â Robby Cornelissen
Sep 10 at 3:52

add a commentÂ |Â

up vote
6
down vote

favorite

I have a moment data object, what i want to do is get the date number, like if 2018-12-31 is given, it should return 365.

var day = 25;
var mon = 12;
var year = 2018;
var sum = 0;
var days = 0;
var month_day = [31,28,31,30,31,30,31,31,30,31,30,31];
for ( var i = 0; i < mon; i++)
 sum += month_day[i];


days = sum - (month_day[mon-1] - day);
console.log(days)

edited Sep 10 at 9:45

Sumurai8

12.2k73059

asked Sep 10 at 3:50

Nimesha Kalinga

1058

I know this is asked for php, but i want to know is, whether is there a elegant way of doing this using moment
â€“Â Nimesha Kalinga
Sep 10 at 3:51

3

Not only brute force, but also incorrect because it ignores leap years.
â€“Â Robby Cornelissen
Sep 10 at 3:52

add a commentÂ |Â

up vote
6
down vote

favorite

I have a moment data object, what i want to do is get the date number, like if 2018-12-31 is given, it should return 365.

var day = 25;
var mon = 12;
var year = 2018;
var sum = 0;
var days = 0;
var month_day = [31,28,31,30,31,30,31,31,30,31,30,31];
for ( var i = 0; i < mon; i++)
 sum += month_day[i];


days = sum - (month_day[mon-1] - day);
console.log(days)

edited Sep 10 at 9:45

Sumurai8

12.2k73059

asked Sep 10 at 3:50

Nimesha Kalinga

1058

I have a moment data object, what i want to do is get the date number, like if 2018-12-31 is given, it should return 365.

var day = 25;
var mon = 12;
var year = 2018;
var sum = 0;
var days = 0;
var month_day = [31,28,31,30,31,30,31,31,30,31,30,31];
for ( var i = 0; i < mon; i++)
 sum += month_day[i];


days = sum - (month_day[mon-1] - day);
console.log(days)

javascript momentjs

edited Sep 10 at 9:45

Sumurai8

12.2k73059

asked Sep 10 at 3:50

Nimesha Kalinga

1058

edited Sep 10 at 9:45

Sumurai8

12.2k73059

asked Sep 10 at 3:50

Nimesha Kalinga

1058

edited Sep 10 at 9:45

Sumurai8

12.2k73059

edited Sep 10 at 9:45

Sumurai8

12.2k73059

edited Sep 10 at 9:45

Sumurai8

12.2k73059

asked Sep 10 at 3:50

Nimesha Kalinga

1058

asked Sep 10 at 3:50

Nimesha Kalinga

1058

asked Sep 10 at 3:50

Nimesha Kalinga

1058

I know this is asked for php, but i want to know is, whether is there a elegant way of doing this using moment
â€“Â Nimesha Kalinga
Sep 10 at 3:51

3

Not only brute force, but also incorrect because it ignores leap years.
â€“Â Robby Cornelissen
Sep 10 at 3:52

add a commentÂ |Â

I know this is asked for php, but i want to know is, whether is there a elegant way of doing this using moment
â€“Â Nimesha Kalinga
Sep 10 at 3:51

3

Not only brute force, but also incorrect because it ignores leap years.
â€“Â Robby Cornelissen
Sep 10 at 3:52

I know this is asked for php, but i want to know is, whether is there a elegant way of doing this using moment
â€“Â Nimesha Kalinga
Sep 10 at 3:51

Not only brute force, but also incorrect because it ignores leap years.
â€“Â Robby Cornelissen
Sep 10 at 3:52

add a commentÂ |Â

3 Answers
3

active

oldest

votes

up vote
13
down vote

accepted

You can use the dayOfYear() function:

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

edited Sep 10 at 4:03

VicJordan

10.1k74069

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

add a commentÂ |Â

up vote
3
down vote

You can do it without momentjs

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

edited Sep 10 at 4:35

answered Sep 10 at 4:08

Dmitry Kolchev

77435

1

Info: momentjs use a somewhat similar approach.
â€“Â user202729
Sep 10 at 11:30

add a commentÂ |Â

up vote
0
down vote

https://momentjs.com/docs/#/get-set/day-of-year/

var day = 25;
var mon = 12;
var year = 2018;
console.log(moment().year(year).month(mon).date(day).dayOfYear());

You should check the docs before asking questions on Stack Overflow.

answered Sep 10 at 3:58

DrevanTonder

324617

add a commentÂ |Â

Your Answer

StackExchange.ifUsing("editor", function ()
StackExchange.using("externalEditor", function ()
StackExchange.using("snippets", function ()
StackExchange.snippets.init();
);
);
, "code-snippets");

StackExchange.ready(function()
var channelOptions =
tags: "".split(" "),
id: "1"
;
initTagRenderer("".split(" "), "".split(" "), channelOptions);

StackExchange.using("externalEditor", function()
// Have to fire editor after snippets, if snippets enabled
if (StackExchange.settings.snippets.snippetsEnabled)
StackExchange.using("snippets", function()
createEditor();
);

else
createEditor();

);

function createEditor()
StackExchange.prepareEditor(
heartbeatType: 'answer',
convertImagesToLinks: true,
noModals: false,
showLowRepImageUploadWarning: true,
reputationToPostImages: 10,
bindNavPrevention: true,
postfix: "",
onDemand: true,
discardSelector: ".discard-answer"
,immediatelyShowMarkdownHelp:true
);

);

draft saved

draft discarded

StackExchange.ready(
function ()
StackExchange.openid.initPostLogin('.new-post-login', 'https%3a%2f%2fstackoverflow.com%2fquestions%2f52250848%2fget-the-day-number-from-moment-object-javascript%23new-answer', 'question_page');

);

Post as a guest

Name

3 Answers
3

active

oldest

votes

3 Answers
3

active

oldest

votes

up vote
13
down vote

accepted

You can use the dayOfYear() function:

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

edited Sep 10 at 4:03

VicJordan

10.1k74069

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

add a commentÂ |Â

up vote
13
down vote

accepted

You can use the dayOfYear() function:

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

edited Sep 10 at 4:03

VicJordan

10.1k74069

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

add a commentÂ |Â

up vote
13
down vote

accepted

You can use the dayOfYear() function:

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

edited Sep 10 at 4:03

VicJordan

10.1k74069

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

You can use the dayOfYear() function:

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

const day = 25;
const month = 12 - 1; // months are 0-based when using the object constructor
const year = 2018;
const date = moment(day, month, year);

console.log(date.dayOfYear()); // 359

<script src="https://cdnjs.cloudflare.com/ajax/libs/moment.js/2.22.2/moment.min.js"></script>

edited Sep 10 at 4:03

VicJordan

10.1k74069

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

edited Sep 10 at 4:03

VicJordan

10.1k74069

edited Sep 10 at 4:03

VicJordan

10.1k74069

edited Sep 10 at 4:03

VicJordan

10.1k74069

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

answered Sep 10 at 4:00

Robby Cornelissen

40.1k126488

add a commentÂ |Â

up vote
3
down vote

You can do it without momentjs

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

edited Sep 10 at 4:35

answered Sep 10 at 4:08

Dmitry Kolchev

77435

1

Info: momentjs use a somewhat similar approach.
â€“Â user202729
Sep 10 at 11:30

add a commentÂ |Â

up vote
3
down vote

You can do it without momentjs

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

edited Sep 10 at 4:35

answered Sep 10 at 4:08

Dmitry Kolchev

77435

1

Info: momentjs use a somewhat similar approach.
â€“Â user202729
Sep 10 at 11:30

add a commentÂ |Â

up vote
3
down vote

You can do it without momentjs

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

edited Sep 10 at 4:35

answered Sep 10 at 4:08

Dmitry Kolchev

77435

You can do it without momentjs

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

let year = 2018;
let month = 12 - 1;
let day = 25;
let dayOfYear = (Date.UTC(year, month, day) - Date.UTC(year, 0, 1)) / 86400000 + 1;
console.log(dayOfYear);

edited Sep 10 at 4:35

answered Sep 10 at 4:08

Dmitry Kolchev

77435

edited Sep 10 at 4:35

answered Sep 10 at 4:08

Dmitry Kolchev

77435

answered Sep 10 at 4:08

Dmitry Kolchev

77435

answered Sep 10 at 4:08

Dmitry Kolchev

77435

1

Info: momentjs use a somewhat similar approach.
â€“Â user202729
Sep 10 at 11:30

add a commentÂ |Â

1

Info: momentjs use a somewhat similar approach.
â€“Â user202729
Sep 10 at 11:30

Info: momentjs use a somewhat similar approach.
â€“Â user202729
Sep 10 at 11:30

add a commentÂ |Â

up vote
0
down vote

https://momentjs.com/docs/#/get-set/day-of-year/

var day = 25;
var mon = 12;
var year = 2018;
console.log(moment().year(year).month(mon).date(day).dayOfYear());

You should check the docs before asking questions on Stack Overflow.

answered Sep 10 at 3:58

DrevanTonder

324617

add a commentÂ |Â

up vote
0
down vote

https://momentjs.com/docs/#/get-set/day-of-year/

var day = 25;
var mon = 12;
var year = 2018;
console.log(moment().year(year).month(mon).date(day).dayOfYear());

You should check the docs before asking questions on Stack Overflow.

answered Sep 10 at 3:58

DrevanTonder

324617

add a commentÂ |Â

up vote
0
down vote

https://momentjs.com/docs/#/get-set/day-of-year/

var day = 25;
var mon = 12;
var year = 2018;
console.log(moment().year(year).month(mon).date(day).dayOfYear());

You should check the docs before asking questions on Stack Overflow.

answered Sep 10 at 3:58

DrevanTonder

324617

https://momentjs.com/docs/#/get-set/day-of-year/

var day = 25;
var mon = 12;
var year = 2018;
console.log(moment().year(year).month(mon).date(day).dayOfYear());

You should check the docs before asking questions on Stack Overflow.

answered Sep 10 at 3:58

DrevanTonder

324617

answered Sep 10 at 3:58

DrevanTonder

324617

answered Sep 10 at 3:58

DrevanTonder

324617

answered Sep 10 at 3:58

DrevanTonder

324617

add a commentÂ |Â

draft saved

draft discarded

draft saved

draft discarded

Post as a guest

Name

搜尋此網誌

Vtyjkyuk