Node JS Tutorial for Beginners in Hindi - 2025 - Implementing DRY Principle in Authentication ♻️ Reusable Function in Express.js & MySQL

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thapatechnical dry principle in javascript express authentication function reusable functions in express clean code best practices avoiding duplicate code express reusable middleware passing arguments in functions jwt authentication express dry principle in programming refactoring authentication optimize express code

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🔥 Access Source Code, PPT & Notes here for Free : https://www.thapatechnical.com/2024/11/introduction-to-nodejs.html 📺 Watch the complete Node.JS Playlist here :https://youtube.com/playlist?list=PLwGdqUZWnOp3KELplHtc-RnJ5xTUPqdgH&si=_ob8F88HYxCdspup ------------------------------------------------------------------------ In this video, we’ll improve our authentication logic by applying the DRY (Don't Repeat Yourself) principle. Instead of writing repetitive authentication code, we’ll create a reusable function, pass arguments, and define it in a separate file. This will help us keep the code clean, efficient, and maintainable. 📌 What You Will Learn: ✔️ What is the DRY Principle and why it matters ✔️ How to refactor authentication logic using reusable functions ✔️ Passing arguments to a function and using them dynamically ✔️ Testing our optimized authentication system in Express.js ✔️ Writing clean and maintainable code --------------------------------------------------------------------- 🚀 Boost Your Skills with these Pre-Requisite Videos: 🔗 Best HTML Course - https://youtu.be/5ccq_nLHneE 🔗 Best CSS Course - https://youtu.be/MSICFljRcb4 🔗 JavaScript Basics Course Part 1 - https://youtu.be/13gLB6hDHR8 🔗 JavaScript Advanced Course Part 2 - https://youtu.be/YwsOCN8woA8 ------------------------------------------------------------------------ 💸 Build Your Own E-commerce Website for Free! - https://www.thapatechnical.com/2024/03/build-complete-ecommerce-website-using.html ------------------------------------------------------------------------ ✌️ Join Us! 🚀 Become a Member: Unlock perks, free source code, and more Join Now : https://www.youtube.com/channel/UCwfaAHy4zQUb2APNOGXUCCA/join 📷 Connect on Instagram: https://www.instagram.com/thapatechnical 🗨️ Join Our Discord Server: Hang out with fellow programmers Discord Link: https://discord.gg/MdScmCsua6 ------------------------------------------------------------------------ ⌛TIMELINE⏳ 🧐 0:00 - What is the DRY Principle? 🔧 0:35 - How to Improve Our Code Using DRY Principle 📌 1:40 - Passing Arguments in Our Function 💡 2:45 - Getting Them as Parameters and Using Them 🧪 3:50 - Checking If Our App Works Properly 💬 4:55 - Comment Your Views on the Code

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