How to Efficiently Filter JSON Objects by Value Ranges in JavaScript

Discover how to filter a JSON object based on dynamic value ranges using JavaScript with clear examples and easy-to-follow code snippets.
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Filtering JSON Objects by Value Ranges in JavaScript

In today’s world of data-heavy applications, working with JSON objects is a common task for developers. One common problem you may encounter is the need to filter data based on specified value ranges. If you’ve found yourself in a situation where you need to filter a JSON object based on a chosen range, worry no more! This guide will walk you through the steps needed to achieve this effectively.

Understanding the Problem

Suppose you have a collection of contracts represented as JSON object arrays and you want to filter these contracts based on defined monetary ranges. For instance, you may want to retrieve all contracts with awarded amounts within a specific financial range.

Here’s a breakdown of the provided data:

contractAmountRange: This array defines different monetary ranges, each identified by a unique ID. Here's a sample of the data:

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

data: This array contains the contracts, with each contract detailing a tender number, awarded amount, and the year it was awarded:

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

rangeSelected: This represents the chosen range, identified by its ID.

Step-by-Step Solution

Step 1: Find the Selected Range

The first step is to search for the selected range in contractAmountRange by its ID using the Array find method. This will allow us to identify the minimum and maximum amounts.

Step 2: Filter the Data

After identifying the selected range, we can use the filter method on the data array to return only those contracts that fall within the identified range of awardedAmt.

Example Code Implementation

Here is a complete code snippet that implements the above steps:

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

Explanation of the Code

Finding the Range: The find method locates the corresponding range in contractAmountRange based on the rangeSelected ID.

Filtering the Contracts: The filter method checks each contract’s awardedAmt to include only those that fall within the min and max values found in the selected range.

Conclusion

Filtering JSON objects by value ranges can be straightforward with JavaScript when you break it down into simple steps. By using find and filter methods effectively, you can quickly retrieve the data that meets your criteria. Feel free to adapt the code provided here to best fit your project's needs and happy coding!