Understanding Callbacks
Explore the concept of callbacks in Node.js to understand how they allow asynchronous tasks like file reading and writing to execute efficiently. Learn to use callbacks for non-blocking code execution and handling results or errors when operations complete.
Imagine you’re baking cookies. Once they’re in the oven, you need to take them out when they’re ready to prevent them from burning. Instead of waiting by the oven, you set a timer and use the time to handle other tasks. When you set the timer, you also decide what you'll do when it rings (take the cookies out). When the timer finishes, it triggers that action. Similarly, in programming, you provide a callback function, and the timer or file API calls it when the asynchronous operation completes.
In programming, callbacks are like the action of taking the cookies out. They define what needs to happen when an asynchronous task completes. The program, like the timer, can continue running other tasks in the ...