Web Reference: 2 days ago · JavaScript is powerful—but also a bit tricky when it comes to handling tasks that don’t happen instantly (like API calls or timers). That’s where callbacks come in. In this blog, we’ll understand what callbacks are, why they exist, and how they help manage asynchronous operations in JavaScript. Because functions in JavaScript can be treated like any other variable or object, you can pass them as arguments to other functions. The key benefit of a callback is that it allows for deferred execution, meaning the callback function does not run immediately. In JavaScript the advantage of using a callback function over using a non-callback function (i.e. a function called within another function which does not include it as a parameter) lies in the callback function's range of accessible data, its scope.
YouTube Excerpt: 00:00:00 introduction 00:00:50 example 1 00:04:00 example 2 //
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