How to Combine Two Functions in Pure JavaScript Efficiently скачать в хорошем качестве

How to Combine Two Functions in Pure JavaScript Efficiently

Learn how to combine two separate event listener functions into one streamlined solution using pure JavaScript. --- This video is based on the question https://stackoverflow.com/q/68875010/ asked by the user 'Лео' ( https://stackoverflow.com/u/16721688/ ) and on the answer https://stackoverflow.com/a/68875108/ provided by the user 'jmpargana' ( https://stackoverflow.com/u/10599843/ ) 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: Combining two functions Pure JS 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. --- Streamlining Your JavaScript: Combining Functions for Event Listeners When developing interactive web applications, handling user events efficiently is crucial. It’s common to end up with multiple functions that perform similar operations, which can lead to unnecessary redundancy in your code. If you’ve faced the challenge of managing two separate event listeners that accomplish the same task, you’re not alone. In this guide, we’ll explore how to combine two functions in JavaScript into one concise and effective solution. The Problem: Duplicate Functions Imagine you have two functions in your JavaScript code that close a search overlay when the user either presses the Escape key or clicks outside a certain area (known here as .search-inner). This can result in code duplication, making maintenance more difficult and potentially leading to missed updates or bugs. Here are the two functions you might have: Function 1: Closing the Overlay with Escape Key [[See Video to Reveal this Text or Code Snippet]] Function 2: Closing the Overlay with a Click Outside [[See Video to Reveal this Text or Code Snippet]] As you can see, both functions perform the same action: closing the search overlay by removing the class search-opened. It’s clear there’s an opportunity to enhance this code by combining these functions into one. The Solution: A Unified Event Listener Instead of maintaining two separate functions, you can create a single function that checks the event conditions for both the Escape key and clicks. This reduces redundancy and improves code clarity. Step 1: Create a Combined Function We will define a new function that processes both types of events. This function will check if the Escape key is pressed or if the click happened outside of .search-inner. [[See Video to Reveal this Text or Code Snippet]] Step 2: Add the Unified Event Listener Now, attach our combined function to both event types—keydown and click—on the same searchOverlay element. [[See Video to Reveal this Text or Code Snippet]] Benefits of Combining Functions By merging these two functions, you’ll experience several advantages: Less Code: A single function is concise and easier to manage. Improved Readability: Only one function handles related actions, which means more straightforward code. Simplified Maintenance: Updates only need to be made in one place if functionality changes. Conclusion In JavaScript programming, efficiency is key. Combining event listener functions not only reduces redundancy but also enhances the clarity and maintainability of your code. The next time you find yourself duplicating functionality, consider refactoring your code to consolidate those actions into a single, cohesive function. By doing this, you’ll keep your code cleaner and your development process smoother. Try implementing this approach in your projects, and enjoy the benefits of streamlined code!