Learn JavaScript 065: Callbacks & Callback Hell Explained

Welcome back to the Complete JavaScript Course! To truly appreciate modern JavaScript, you first have to survive the Dark Ages. Before ES6 (2015), developers had to handle asynchronous network requests and database queries using one single tool: The Callback Function. In this video, we explore how innocent callbacks function on a basic level. Then, we will simulate fetching complex database relations to see how quickly callbacks scale out of control, resulting in a terrifying, deeply nested structure known as "Callback Hell" or the "Pyramid of Doom." #JavaScript #WebDevelopment #LearnToCode #Callbacks #SoftwareEngineering #FrontendDevelopment #BackendDevelopment #CleanCode