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In your case, the module function will be executed first. The object it returns has a function called controller which will be executed second. The callback function will be called only when Angular sees ng-controllerquotmyctrlquot directive.

Before promises and asyncawait were introduced, asynchronous code was dealt with exclusively using the callback functions or 'callbacks'. Callbacks are not really a feature of JavaScript in themselves. They are rather a way of structuring regular functions to run tasks in a certain order. The method involves effectively nested a function

JavaScript Callbacks Previous Next quotI will call back later!quot A callback is a function passed as an argument to another function. This technique allows a function to call another function. A callback function can run after another function has finished. Function Sequence.

The underlying computational process of the f function is depicted below. Since f is async, it will also run in parallel with its caller Computational process of quotawaitquot. The function f starts and spawns a promise. At that moment, the rest of the function is encapsulated in a callback, and scheduled to execute after the promise is complete.

Callbacks are a crucial tool for managing asynchronous code execution in JavaScript. They enable you to specify what should happen when an asynchronous operation completes, without blocking the

When your main function invokes the callback function, it basically hands over the program execution to the callback function. In essence, the entire program's flow depends on the response of the callback function, and then it proceeds from there onward. This nature of program execution is referred to as inversion of control.

Explanation The setTimeout function delays the execution of the callback function. The delayedGreeting function takes name and a callback as arguments, then calls the callback after a 2-second delay. Callback Functions in Array Methods. JavaScript array methods like map, filter, reduce, and forEach use callbacks to perform operations on

The Callback queue is a data structure that operates on the FIFO first-in-first-out principle. Callback functions that need to be asynchronously executed, are pushed onto the callback queue. These are later pushed to the Call stack to be executed when the event loop finds an empty call stack. 4. Web API

In the world of JavaScript programming, callback functions play a crucial role in enabling asynchronous behavior and enhancing the overall efficiency of code execution. Understanding callback functions is essential for every developer seeking to harness the power of JavaScript effectively.

The call stack is a data structure that keeps track of function execution in JavaScript. It follows the Last In, First Out LIFO principle When a function is called, it is pushed onto the stack. When the function execution completes, it is popped off the stack. 2. What is the role of the callback queue in JavaScript? Answer