How to Search in an Array of Objects with JavaScript

Learn how to effectively search through an array of objects in JavaScript for multiple values, including caseNumber, patientName, and reader. --- This video is based on the question https://stackoverflow.com/q/68034669/ asked by the user 'Faizan Saiyed' ( https://stackoverflow.com/u/5875983/ ) and on the answer https://stackoverflow.com/a/68042485/ provided by the user 'hsjeevan' ( https://stackoverflow.com/u/7416119/ ) 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: Search in Array of objects on multiple values 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. --- How to Search in an Array of Objects with JavaScript: A Simple Guide Searching through an array of objects in JavaScript can often be challenging, especially when trying to find matches across multiple properties. If you're working on a project where you need a search bar that filters results based on keys like caseNumber, patientName, and reader, you’re in the right place! This guide will guide you through the process of creating an efficient search function to help you achieve just that. The Problem Imagine you have an array of patient records, each represented as an object with properties such as caseNumber, patientName, technician, and reader. Here's a sample array: [[See Video to Reveal this Text or Code Snippet]] If you want to allow users to type in a search bar and filter this data based on any matching string across multiple keys, you need a simple and effective search function. The Solution To tackle this problem, we can create a dedicated search function in JavaScript. Here’s how you can build it step by step: Step 1: Setting Up HTML Input Start with a basic HTML structure for the input field where users will type their search query: [[See Video to Reveal this Text or Code Snippet]] Step 2: Create the JavaScript Function Next, you’ll implement the search logic in JavaScript. Below is a simple function to filter the array based on the input string, checking all the object properties: [[See Video to Reveal this Text or Code Snippet]] Explanation of the Function Event Listener: The onkeyup attribute in the HTML calls the searchArray function whenever the user types. Get Input Value: The value from the input field is converted to lowercase for case-insensitive comparison. Filtering Data: The filter method is used on the data array. For each object (el), Object.values(el) retrieves all the values (like caseNumber, patientName, etc.), and some checks if any value includes the input string. Display Results: Finally, the filtered results are printed to the paragraph with the ID log. Step 3: Test Your Implementation After adding the above code and HTML to your project, enter a search term in the input field. The results should dynamically update to show only the matching objects from your dataset. Conclusion By following these steps, you can easily implement a search feature for an array of objects in JavaScript. Whether you're filtering patient records or managing any other data collections, this approach can be adapted to fit your specific needs. Additional Note If you're using Angular or any other frameworks, you may consider using reactive forms and built-in pipes for a more integrated approach. However, maintaining a simple JavaScript function can give you flexibility and maintain compatibility across various applications. Now it's your turn! Go ahead and implement this solution in your project, and enjoy the power of quick and efficient data retrieval.