CODEWITHSUNDEEP
javascriptarrayssortingdate
matijap
matijap

Reputation: 59

Sorting array with date types

Still new to this. I encountered a problem when trying to sort an array of objects with a Date type. For example: I have 3 cars with: (Name, Date of first registration(type Date)). How do I sort this array? Should I change date to string? Thanks. 

function car(Make, Model, Date) {
  return Make + Model + Date;
}
var date1 = '2010';
var date2 = '2003';
var date3 = '2015';

var d1 = new Date(date1);
var d2 = new Date(date2);
var d3 = new Date(date3);

var n1 = d1.getFullYear();
var n2 = d2.getFullYear();
var n3 = d3.getFullYear();

var x = car('Mercedes', ' c220 ', n1);
var y = car(' Toyota', ' Prius ', n2);
var z = car(' Audi', ' a3 ', n3);
var polje = [x, y, z];

console.log(polje);
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Upvotes: 0

Views: 100

Answers (1)

Nina Scholz
Nina Scholz

Reputation: 386644

You could use Date#toISOString for a sortable string with String#localeCompare.

Then you could use this for sorting

var array = [
        { make: 'Mercedes', model: 'c220', date : new Date('2010') },
        { make: 'Toyota', model: 'Prius', date : new Date('2003') },
        { make: 'Audi', model: 'a3', date : new Date('2015') }
    ];

array.sort(function (a, b) {
    return a.date.toISOString().localeCompare(b.date.toISOString());
});

console.log(array);
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Version with

  • firstRegistration, desc,
  • make, asc,
  • model, asc

var array = [
        { make: 'Mercedes', model: 'c220', firstRegistration: 2010 },
        { make: 'Toyota', model: 'Prius', firstRegistration: 2015 },
        { make: 'Audi', model: 'a3', firstRegistration: 2015 }
    ];

array.sort(function (a, b) {
    return b.firstRegistration - a.firstRegistration ||
        a.make.localeCompare(b.make) ||
        a.model.localeCompare(b.model);
});

console.log(array);
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Upvotes: 2

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