Free online courseJavaScript Objects and Prototypes In-depth

Course Description

JavaScript Objects and Prototypes In-depth is a free online course in Technology and Programming, focused on Web Development and designed to help you understand how JavaScript really works under the hood.

You will build a clear mental model of objects in JavaScript, moving from core object fundamentals to practical ways of creating and shaping objects for real applications. The course explains constructors and how they differ from regular functions, then dives into how function calls affect execution and context.

A major focus is mastering this: how it gets its value, how it behaves in different execution styles, and how to reliably work with object methods that depend on context. You will also learn how to use call to control function invocation and context explicitly.

From there, the course transitions into prototypes, showing how property lookup works across the prototype chain and how shared behavior can be modeled efficiently. You will see how objects link through prototypes, how Object and the prototype object fit into the language, and how inheritance patterns are implemented in JavaScript.

By the end, you will be able to reason confidently about object behavior, reuse, and inheritance, making it easier to write maintainable JavaScript and debug tricky context or prototype-related issues.