What is the difference between synchronous and asynchronous code?

What is the difference between synchronous and asynchronous code?

Synchronous code executes sequentially, meaning each operation must complete before the next one starts. Asynchronous code, on the other hand, allows multiple operations to run concurrently, improving efficiency.

Can you give me an example of synchronous code?

Sure! In synchronous code, if you have a function that fetches data from a server, it will wait for the data to be returned before moving on to the next line of code.

And how does asynchronous code work?

Asynchronous code uses callbacks, promises, or async/await to allow the program to continue running while waiting for the data to be fetched, thus not blocking the execution.

What are the advantages of using asynchronous code?

The main advantages include improved performance, better resource utilization, and a more responsive user experience, especially in applications that require I/O operations.