Скачать или смотреть How to Filter a Different Item Value of Two Arrays of Objects in JavaScript

Learn how to effectively filter and compare item values between two arrays of objects in JavaScript, ensuring you retrieve only the objects with different values.
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This video is based on the question https://stackoverflow.com/q/74022681/ asked by the user 'Rezky Rizaldi' ( https://stackoverflow.com/u/12249940/ ) and on the answer https://stackoverflow.com/a/74022772/ provided by the user 'Rajesh' ( https://stackoverflow.com/u/3783478/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

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Introduction

Working with arrays of objects in JavaScript is a common task for developers. Whether it's for data manipulation, comparison, or filtering, these operations often pose unique challenges. One such challenge is filtering out objects with different values based on a specific key, such as id, between two arrays.

In this post, we will delve into a problem where you may have two arrays of objects that share some similar properties but differ in certain item values. Our goal will be to filter these arrays and obtain a single object that has a different value in a specified property.

The Problem

Let’s consider an example scenario with two arrays of objects:

First Array

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

Second Array

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

Expected Output

Based on these arrays, we expect to filter them and retrieve an object where the allow property has a different value:

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

Solution Overview

To achieve this filtering of different item values, we will create a function that compares the objects in both arrays based on the criteria specified. The logic will be as follows:

Loop through the second array (arr2).

For each object in arr2, check if it matches the given condition using a parameter.

Find the corresponding object in the first array (arr1) using the id.

Compare the specified properties to confirm if they differ.

Return the matching object from arr2 if the values are different.

Implementation

Here’s the JavaScript function that implements the above logic:

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

Conclusion

In summary, filtering arrays of objects based on distinct property values is a powerful technique in JavaScript. By following the outlined steps and utilizing the provided code, you can effectively obtain objects with differing criteria across two datasets.

Using this method not only enhances your coding skills but also improves your understanding of functional programming in JavaScript. Happy coding!