JavaScript Promises Explained for Beginners

JavaScript is single-threaded, meaning it can only do one thing at a time. But what if you need to fetch data from an API, read a file, or wait for a timer without freezing your app? This is where promises come in. 🧠 What Problem Do Promises Solve? Before promises, we used callbacks for async tasks: ```js id="cb1" fetchData(function(data) { processData(data, function(result) { console.log(result); }); }); ❌ Callback hell → hard to read, hard to maintain Promises simplify this by representing a *