Callbacks in javascript explained

callbacks in javascript are functions that are passed as arguments to other functions, allowing for asynchronous execution of code. this mechanism enables developers to handle operations like network requests, file reading, or timers without blocking the main execution thread. when the parent function completes its task, it invokes the callback, thereby allowing for a continuation of logic once the initial operation is finished. this is particularly useful in scenarios where actions depend on the completion of previous tasks, such as fetching data before rendering it on the page. callbacks help manage complex workflows, but they can also lead to "callback hell," a situation where nested callbacks make code difficult to read and maintain. to address this, modern javascript has introduced promises and async/await syntax, which provide cleaner and more manageable alternatives for handling asynchronous operations while maintaining the core principles of callbacks.
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