Callback Functions

The video tutorial introduces callback functions, explaining their role in JavaScript as functions passed as parameters to other functions. It distinguishes between synchronous and asynchronous callbacks, using examples like setTimeout. The tutorial simulates server actions by creating and retrieving posts, highlighting issues with synchronous operations. It then demonstrates how to use callbacks to handle asynchronous tasks effectively, ensuring operations complete in the correct order. The tutorial prepares viewers for building an Ajax library in future lessons.

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