How to Sort an Array of Objects Based on Another Array in JavaScript and Vue.js

Discover how to effectively `sort an array of objects` in JavaScript or Vue.js by using another array's key value. This guide will walk you through a step-by-step process for achieving the desired sort order.
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Sorting Arrays of Objects with JavaScript and Vue.js

Sorting arrays can sometimes be a challenge, especially when you need to organize one array of objects based on the criteria defined in another array. If you're working with JavaScript or Vue.js and have found yourself needing to sort an array of objects as per another array's order, you're in the right place!

This guide will walk you through a clear solution to a common problem many developers face: sorting array2 based on the sort order defined in array1.

The Problem at a Glance

Suppose you have two arrays:

array1: This array defines groups and their corresponding sort orders.

array2: This array contains data associated with these groups, but not sorted in the order defined by array1.

Here is a simple breakdown of our arrays:

Sample Input

array1

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

array2

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

Our goal is to sort array2 so that its entries follow the order defined in array1, leading to an output of: GROUP1, GROUP2, GROUP3.

The Solution

To accomplish this sorting task, we can utilize JavaScript's powerful array methods, specifically the Object.entries() and sort() functions. Below is a step-by-step approach to how we can achieve the desired sorting:

Step 1: Extract Entries from array2

We first need to convert array2 into an array of entries which allows us to sort it. This can be done using Object.entries().

Step 2: Perform Sorting

Next, we will use the sort() method to arrange the entries. Here is the full code snippet to sort array2 based on the sort order defined in array1:

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

Explanation of the Sorting Code:

Object.entries(array2): This converts array2 into a format suitable for sorting, resulting in an array of key-value pairs.

.sort(([groupA], [groupB]) => ...): This sorts the created array based on a comparison function.

array1.find(e => e.group === groupA).sort_order: This retrieves the sort order for groupA.

array1.find(e => e.group === groupB).sort_order: This retrieves the sort order for groupB.

The difference between the two sort orders determines the order in the sorted array.

Final Output

After running the sorting logic, the output will look like this:

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

Conclusion

In this post, we've explored how to sort an array of objects based on another array's values using JavaScript and Vue.js. Whether you're working on a web application or just practicing your coding skills, understanding how to manipulate arrays effectively helps streamline your data management.

Feel free to experiment with this sorting technique and enhance your applications!

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