How to Sort an Array of Objects in JavaScript

Learn how to effectively sort an array of objects in JavaScript, based on specific properties like numbers. Our step-by-step guide makes it easy!
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How to Sort an Array of Objects in JavaScript

Sorting arrays is a fundamental operation in programming, and when those arrays contain objects (or dictionaries), it can seem a bit complicated. If you’ve ever found yourself in this situation, you’re not alone!

In this guide, we’ll tackle the question: How can I sort an array that contains dictionaries in JavaScript? We’ll break down the solution into clear and simple steps so you can easily apply the concept to your own projects.

Understanding the Problem

Let’s start by visualizing the problem. You have the following array of objects:

[[See Video to Reveal this Text or Code Snippet]]

Your goal is to sort this array based on the num property of each object, resulting in:

[[See Video to Reveal this Text or Code Snippet]]

Sorting a simple array like [0, 5, 3, 8, 9, 4] is quite straightforward, but when you have objects, there’s a bit more to consider.

The Solution: Sorting Arrays of Dictionaries

Step 1: Using the sort() Method

JavaScript provides an in-built method called sort(), allowing you to sort arrays in place. Let’s learn how to utilize this method effectively when dealing with an array of objects.

Step 2: The Comparison Function

The sort() method accepts a comparison function that determines the order of the elements. The function receives two arguments at a time, which are the objects to be compared.

Step 3: Comparing Properties

To sort an array of dictionaries (in our case, objects), you need to compare their properties. Here’s the key:

Example Code

Here's a simple implementation of how to sort your array:

[[See Video to Reveal this Text or Code Snippet]]

Step 4: Storing the Result

The sort() method returns the sorted array, so it's a good practice to store it in a variable like sortedArr.

Conclusion

Sorting an array of objects in JavaScript is quite straightforward once you understand how to leverage the sort() method with a comparison function based on the properties of your objects.

Now that you know how to sort an array that contains dictionaries, you can apply this method to different scenarios in your programming journey. Happy coding!