Sort an Array of Objects by Property Using sort(fn)

By  on  

Believe it or not, there's more to JavaScript than the helper methods and classes they provide your JavaScript library. No, like seriously bro; these JavaScript-given methods do exist. One of those methods, sort, is provided to every Array instance via its prototype. I've used this method once or twice in the history of ever, bro, since I make every effort to ensure proper sort on the server side, but sometimes you may receive a JSON dump and need to sort on the client side.

Most people would assume that sort would take no method and simply sort the basic items within the array:

[1, 3, 9, 2].sort();
	// Returns: [1, 2, 3, 9]
[1, "a", function(){}, {}, 12, "c"].sort();
	// Returns: [1, 12, Object, "a", "c", function (){}]

But nay, broseph! If you provide a function expression to the sort method, you can sort objects within the array using simple logic. Let's say you have an array of objects representing persons and you want to sort them by age. Oh yes, it can be done, and quite easily:

	{ name: "Robin Van Persie", age: 28 },
	{ name: "Theo Walcott", age: 22 },
	{ name: "Bacary Sagna", age: 26  }
].sort(function(obj1, obj2) {
	// Ascending: first age less than the previous
	return obj1.age - obj2.age;
	// Returns:  
	// [
	//	  { name: "Theo Walcott", age: 22 },
	//	  { name: "Bacary Sagna", age: 26  },
	//	  { name: "Robin Van Persie", age: 28 }
	// ]

The anonymous function returns whether or not the first object's age is less than the second's, thus sorting the entire array in ascending order by age. Reverse the first and second arguments to sort in descending order.

So brochacho, now you know how to sort an array of objects using JavaScript. Get to it!

Track.js Error Reporting

Upcoming Events

Recent Features

  • Facebook Open Graph META Tags

    It's no secret that Facebook has become a major traffic driver for all types of websites.  Nowadays even large corporations steer consumers toward their Facebook pages instead of the corporate websites directly.  And of course there are Facebook "Like" and "Recommend" widgets on every website.  One...

  • Animated 3D Flipping Menu with CSS

    CSS animations aren't just for basic fades or sliding elements anymore -- CSS animations are capable of much more.  I've showed you how you can create an exploding logo (applied with JavaScript, but all animation is CSS), an animated Photo Stack, a sweet...

Incredible Demos

  • Chris Coyier’s Favorite CodePen Demos

    David asked me if I'd be up for a guest post picking out some of my favorite Pens from CodePen. A daunting task! There are so many! I managed to pick a few though that have blown me away over the past few months. If you...

  • CSS Selection Styling

    The goal of CSS is to allow styling of content and structure within a web page.  We all know that, right?  As CSS revisions arrive, we're provided more opportunity to control.  One of the little known styling option available within the browser is text selection styling.


  1. Boger

    Nice read, never thought to sort objects this way. but man broseph and brochacho got me laugh to death :D

  2. champi

    Great ! how could I do this in PHP ?

  3. A little bit late, but it still may be useful… ;)

    In PHP, it is almost the same. Here is the equivalent code:

    $people = array(
      array('name' => 'Robin Van Persie', 'age' => 28),
      array('name' => 'Theo Walcott', 'age' => 22),
      array('name' => 'Bacary Sagna', 'age' => 26)
    usort($people, function($a, $b) {
      return $a['age'] - $b['age'];

    More informations:

  4. Anil Gautam

    Hey I am tring your code but its not working.

  5. mauro

    hi, i have tryed to bud a sort function by attributes a lot really, and finally i find this blog, your code work for me if the attribute is a number not if it is a string, why? i have to do something in that case? really thank you

  6. Do Jo

    What if I wanted to sort by “name”?

Wrap your code in <pre class="{language}"></pre> tags, link to a GitHub gist, JSFiddle fiddle, or CodePen pen to embed!