Скачать или смотреть Extracting Multiple schemeNo Values from an API Response in Angular

Learn how to efficiently extract multiple `schemeNo` values from a JSON API response in Angular using Array functions.
---
This video is based on the question https://stackoverflow.com/q/64764569/ asked by the user 'skydev' ( https://stackoverflow.com/u/5853403/ ) and on the answer https://stackoverflow.com/a/64764826/ provided by the user 'Eldar' ( https://stackoverflow.com/u/12354911/ ) at 'Stack Overflow' website. Thanks to these great users and Stackexchange community for their contributions.

Visit these links for original content and any more details, such as alternate solutions, latest updates/developments on topic, comments, revision history etc. For example, the original title of the Question was: Extract certain values of same parameter name from endpoint

Also, Content (except music) licensed under CC BY-SA https://meta.stackexchange.com/help/l...
The original Question post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license, and the original Answer post is licensed under the 'CC BY-SA 4.0' ( https://creativecommons.org/licenses/... ) license.

If anything seems off to you, please feel free to write me at vlogize [AT] gmail [DOT] com.
---
Extracting Multiple schemeNo Values from an API Response in Angular

When working with APIs in Angular, you might encounter scenarios where you're required to extract specific pieces of data from a larger dataset. One common case is when you're dealing with data that contains multiple entries for the same key—in this case, the schemeNo. If you're wondering how to extract multiple schemeNo values from a set of data returned by an endpoint, you are in the right place.

The Problem

Imagine you have an API endpoint that returns a JSON object containing an array of benefits, each with its own attributes, including schemeNo. Your task is to pull out just the schemeNo values from this response, but using an indexed approach returns only the first one. Here's what the structure might look like:

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

If you try to access the schemeNo like this:

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

You would only get 1590, missing out on all the additional schemeNo values. This method will cause an undefined error if you try to remove the [0].

The Solution

To efficiently extract all schemeNo values, you can utilize the Array.map method, which allows you to transform each item in the array into the value you need. Here’s how to do it:

Step-by-Step Guide

Parse the Response: First, ensure you're parsing the JSON response correctly.

Access the Benefits Array: Navigate to the benefits array in the parsed data.

Apply Array.map: Use the map function to iterate over each benefit, extracting the schemeNo.

Example Code

Here is the corrected and efficient way to extract all schemeNo values:

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

Explanation of the Code:

JSON.parse(resp["retirementData"]): This part converts the retirementData string into a JavaScript object.

["benefits"]: This accesses the benefits array within that object.

map(r => r.availableBenefitOptions.schemeNo): This maps through each object in the benefits array and retrieves the schemeNo property from the availableBenefitOptions.

Conclusion

By utilizing the Array.map function, you can easily extract multiple values corresponding to the same parameter from an API response in Angular. This method not only simplifies your code but also enhances its readability and efficiency. Whether you're working with financial data or any other structured information, mastering these techniques will greatly improve your data-handling capabilities.

By following this guide, you should now be able to extract multiple schemeNo entries without trouble. Happy coding!