Скачать или смотреть How to Make an Array of Objects from Dynamic Values in JavaScript

Learn how to efficiently create an array of objects from dynamic values in JavaScript. This guide provides a clear solution with code examples and detailed explanations.
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Creating an Array of Objects from Dynamic Values in JavaScript

In the world of programming, particularly when working with JavaScript, you often find yourself needing to manipulate data in various forms. One common task is to create an array of objects from dynamic values sourced from different files. If you’re grappling with this challenge, you’re not alone!

In today's guide, we’ll explore how to achieve this using a practical example. We'll break down a function that processes test files to return structured data. Let’s dive in!

The Problem

You might already have a function designed to filter through a list of files and extract information. Here’s a snippet of what that function might look like:

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

In this function:

filterFile holds an array of files that end with .test.ts.

You’re reading each file, running a regex matcher, and pushing the results into an array.

However, you want to return a more organized structure—an array of objects where each object represents a file, along with its extracted values. The desired output looks like:

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

The Solution

To convert your function into one that returns an array of objects properly, we’ll make a few adjustments. Here’s an updated version of the original function:

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

Breakdown of the Updated Code

Initialization:

We create an empty array, filesArray, to store the objects we build from each file.

Filter Files:

The filterFile array is generated by filtering the initial files array to include only those with .test.ts extensions.

Loop Through Filtered Files:

Using forEach, we iterate through each test suite. Inside the loop:

We read the content of the file with fs.readFileSync and assign it to testSuites.

We call the regexMatcher function on the content to get the extractedValue.

Constructing Objects:

We create an object during each iteration and use the file name (testsuite) as the key and the extracted value as the value. This object is then pushed onto filesArray.

Returning the Result:

Finally, the function returns the filesArray, which now contains the desired structure.

Conclusion

Transforming dynamic values into a structured array of objects is straightforward with the right approach. By iterating over the files, extracting necessary information, and organizing it into a clear format, you enhance both the readability and the functionality of your data handling in JavaScript.

Feel free to integrate this solution into your projects, and remember that clean, organized data makes further operations much easier! Happy coding!