4. Why Your JavaScript OOP Design Breaks | Liskov Substitution Principle Explained

In this video, we explain the Liskov Substitution Principle (LSP), one of the most important SOLID principles, using real JavaScript and TypeScript examples. You’ll learn: - What the Liskov Substitution Principle is - Why JavaScript allows LSP violations - How LSP violations cause runtime bugs - A wrong OOP design example without LSP - The correct LSP-compliant design - How TypeScript helps catch LSP issues at compile time This video is perfect for: - JavaScript developers - TypeScript developers - Frontend & backend engineers - Interview preparation - Learning SOLID principles in a simple way If replacing a parent class with a child class breaks your code, then you are violating the Liskov Substitution Principle. Watch till the end to fully understand LSP with clean, practical examples. 👍 Like, Share & Subscribe for more JavaScript, TypeScript & Software Design videos. #LiskovSubstitutionPrinciple #SOLIDPrinciples #JavaScript #TypeScript #OOP #CleanCode Github Link: https://github.com/leelanarasimha Instagram: https://www.instagram.com/leelawebdev/ Telegram: http://t.me/LeelaWebDev Facebook Page: https://www.facebook.com/LeelaWebDev Twitter Page: https://twitter.com/leelanarsimha Linkedin: https://www.linkedin.com/in/leela-narasimha-reddy-86517948/ GitHub: https://github.com/leelanarasimha Youtube Page: https://www.youtube.com/leelawebdev If you like my video, please subscribe to my channel. My Playlists: React Complete Course: https://www.youtube.com/watch?v=LMFAaNWmKII&list=PL_euSNU_eLbfuahgrm63xLCWfpl2MaTAr Vue Complete Course: https://www.youtube.com/watch?v=x0uc670hw_8&list=PL_euSNU_eLbedoBv-RllKj_f2Yh--91nZ Angular NGRX Complete Course: https://www.youtube.com/watch?v=3WI5BEXVkmE&list=PL_euSNU_eLbdg0gKbR8zmVJb4xLgHR7BX Angular Complete Course: https://www.youtube.com/watch?v=wI18jE_LHME&list=PL_euSNU_eLbeAJxvVdJn5lhPWX9IWHhxs TypeScript Complete Course: https://www.youtube.com/watch?v=xns0Vaip4wc&list=PL_euSNU_eLbfJEwuNa43lM89yfev537Mj ES6 Complete Course: https://www.youtube.com/watch?v=tt1SkTpHUUU&list=PL_euSNU_eLbfIr88Sgtalv4W58mTW07V4 Javascript Complete Course: https://www.youtube.com/watch?v=JZmwaniKUUc&list=PL_euSNU_eLbeHPrIcllJ1_9hdcffwGuWi GIT Complete Course: https://www.youtube.com/watch?v=vMdSqMf6BPY&list=PL_euSNU_eLbegnt7aR8I1gXfLhKZbxnYX ESLint Complete Course: https://www.youtube.com/watch?v=OYrIfgi_Ghg&list=PL_euSNU_eLbeVd_eDmWzUpEmXizWQRmEm RxJS Complete Course: https://www.youtube.com/watch?v=Q-iZ1JHA0GE&list=PL_euSNU_eLbc0HclFbirIaMXaXzQJ_K4n Declarative Reactive Programming in Angular Complete Course: https://www.youtube.com/watch?v=P38auPts2vs&list=PL_euSNU_eLberdNLX5idpheqHLjdZltJy Angular CLI Complete Course Tutorial: https://www.youtube.com/watch?v=iEPegoPPHDk&list=PL_euSNU_eLbfmSwZYA3ab3a3JGQk8pQdZ Angular UnitTesting Complete Course: https://www.youtube.com/watch?v=VnaDJOucT-4&list=PL_euSNU_eLbcqJ6_Z3FOZJ8mLZ2oMFItV My Courses Playlist Page: https://www.youtube.com/c/LeelaWebDev/playlists #leelawebdev Join this channel to get access to perks: https://www.youtube.com/channel/UC1J-YH25LCjvLnFjy7WDqGA/join