Sort month names

Question

Sort month names in sequence using jQuery

Input

month = [ "Apr","May","Jun","Oct","Nov","Dec","Jul","Aug","Sep"];

Expected Output

month = [ "Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];

How can sort month name? sort() function only short alphabatic,alphanumeric or numeric value.

loop through each element in the array and write your own sorting! — Imesh Chandrasiri, Dec 22 '14 at 09:13
@Harko, something tells me we don't agree on what *alphabetic* means :) — Frédéric Hamidi, Dec 22 '14 at 09:14
possible duplicate of [PHP re-order array of month names](http://stackoverflow.com/questions/12424968/php-re-order-array-of-month-names) — waki, Dec 22 '14 at 09:15
you would have to convert to dates and find month index....just create a dictionary — charlietfl, Dec 22 '14 at 09:16
@Waki I want in `jQuery` not in `PHP`. Check my selected tag. — Sadikhasan, Dec 22 '14 at 09:29
I request to downvoter If you do not understand question then please clerify before downvote. You lazy person so directly downvoted or close question before understand user requirement. — Sadikhasan, Dec 22 '14 at 09:31
may be this is some what useful buddy (http://drmsite.blogspot.in/2013/08/datatables-custom-sort-by-month-name.html) — Bhargav Modi, Dec 22 '14 at 09:37

score 13 · Accepted Answer · edited Nov 03 '16 at 14:50

13

Take an array of all months in the year that is in proper order ( hard coded for reference) and use the indexes of master month array as sort criteria in sort()

var allMonths = ['Jan','Feb','Mar', 'Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];

var month = [ "Apr","May","Jun","Oct","Nov","Dec","Jul","Aug","Sep"];

month.sort(function(a,b){
    return allMonths.indexOf(a) > allMonths.indexOf(b);
});

// returns  ["Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]

DEMO

edited Nov 03 '16 at 14:50

Chance Smith

1,211
1
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32

answered Dec 22 '14 at 09:45

charlietfl

170,828
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150

Exactly expected output that I want. How can I thanks to you. Really appraciated with you. Many many thanks. – Sadikhasan Dec 22 '14 at 09:48
4

Am I missing something? This code is wrong. The sort function is supposed to return an integer. You might get lucky sometimes returning a boolean value, but really you should be returning `allMonths.indexOf(a) - allMonths.indexOf(b)` see this question for more info: http://stackoverflow.com/questions/24080785/sorting-in-javascript-shouldnt-returning-a-boolean-be-enough-for-a-comparison – RTF Nov 09 '16 at 17:54

score 3 · Answer 2 · answered Apr 21 '21 at 19:59

In my case, I needed to tweak Chance Smith's answer a bit as suggested by RTF in the comment of the accepted answer to get it working. The modification was changing '>' into '-'. I'm pasting the working code here in case anyone needed.

var allMonths = ['Jan','Feb','Mar', 'Apr','May','Jun','Jul','Aug','Sep','Oct','Nov','Dec'];

var month = [ "Apr","May","Jun","Oct","Nov","Dec","Jul","Aug","Sep"];

month.sort(function(a,b){
    return allMonths.indexOf(a) - allMonths.indexOf(b);
});

// returns  ["Apr", "May", "Jun", "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"]

Sort month names

2 Answers2

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