Javascript - Sort array by date and alphabetically in the same time [duplicate]

Question

I have an array with objects that contain titles and dates.

[{
   title: 'Some title'
   date: '12.00 PM 17/10/2014'
},
...
]

I need to sort that values by date and alphabetically in the same time, the result should look like follows:

1.00 PM - Btitle
1.00 PM - Bztitle
1.00 PM - Ctitle
3.00 PM - Atitle
3.00 PM - Btitle

Should I create additional arrays to remember state etc? Or maybe it's possible to do within single sort method.

Tip: If you could get a string out of the date/time in the format YYYY/MM/DD HH:mm:ss and concatenate it with the title, you then could sort the array by this merged data. — emerson.marini
– emerson.marini, Commented Oct 17, 2014 at 14:35

T.J. Crowder · Accepted Answer · 2014-10-17 14:35:07Z

12

You can do it in a single sort method. The bones of it are:

yourArray.sort(function(a, b) {
    var adate = /* ...parse the date in a.date... */,
        bdate = /* ...parse the date in b.date... */,
        rv = adate - bdate;
    if (rv === 0) {
        rv = a.title.localeCompare(b.title);
    }
    return rv;
});

I'll leave the parsing of that odd date format as an exercise for the reader...

answered Oct 17, 2014 at 14:35

T.J. Crowder

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