Lifetime access to this course
Avoiding Code Duplication
In this lesson, you'll explore the DRY Principle—a fundamental concept in software development that stands for "Don't Repeat Yourself." Adhering to the DRY principle is crucial for maintaining a clean, efficient, and scalable codebase. Let's delve into why repetition can be detrimental to your code and how embracing DRY practices can benefit both developers and organizations. ## Code Duplication ### Technical Debt and Maintenance Challenges Duplicating code across your codebase is akin to taking out a "loan" that accrues interest over time. Each instance of duplicated code becomes a potential point of failure, requiring separate maintenance and updates. This accumulation of technical debt can significantly slow down development and increase project costs.
The rest of this lesson is waiting.
Join JS Mastery Pro to unlock it.

Complete Path to JavaScript Mastery
$300
Buy the Course OnlyBuild advanced web app
Certificate of completion included
Great for focused learners who just want this course





Get Full Access
$149 /month
Lock in a year & save—2 months free!
Access to all courses
Quizzes, mini-challenges, AI summaries, inline sandboxes
Participation in a private community
Build real production-grade apps
Mock interviews & project reviews
Weekly live sessions & member-only access