Скачать или смотреть How to Split Array Values into a New Array of Keys and Values in JavaScript

Learn how to easily transform an array of objects into a formatted array of key-value pairs using JavaScript with our step-by-step guide.
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Transforming Array Values into a New Array of Keys/Values with JavaScript

Are you grappling with how to restructure an array of objects in JavaScript? You’re not alone! Many developers encounter this issue when dealing with complex data. In this guide, we'll tackle the specific problem of splitting an array containing information about organizations into a more manageable format with distinct keys and values.

The Initial Problem

Let's say you have the following array of objects, which includes various attributes of organizations, such as their ID, label, value, and key. Here's what it looks like:

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

Your goal is to transform this into a cleaner array format where each organization is represented with its relevant name and field, like this:

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

The Solution Explained

To achieve this transformation, we can utilize JavaScript array methods efficiently. Here’s how we can do it step-by-step.

Step 1: Initialize Your Variables

First, define the original data and create an empty array for the new formatted organizations:

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

Step 2: Map Over the Original Data

We will use the map() function to iterate through the organisationData array, but we need to handle pairs of entries carefully to construct the new organization objects correctly.

Step 3: Create Conditional Logic

Since each organization has its name and field stored in alternating indexes, we’ll check the current index as follows:

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

Step 4: Console Log the Result

Finally, we can check the results stored in newOrgArray.

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

Complete Example

Here's the complete code that combines all the steps above:

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

Conclusion

Through this simple yet effective approach, we can easily transform an array of object attributes into a structured array of organizations in JavaScript. With this technique up your sleeve, manipulating and combining data will be much easier in your future projects. Happy coding!