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Nas Jones
7,849 PointsComplete rundown (stuck)
This will be lengthy. I just finished the course AJAX. I'm on Asynchronous programming with JS. I'm very confused by this. What is a callback? It's a function aka parameter passed into another function correct? How do you call one? What is the purpose of using a callback? What's the logic behind it?. What is passing a reference to an event listener? This whole course confuses me, If someone can simply explain it to me like break it down simply that would me alot.
1 Answer
Reggie Williams
Treehouse TeacherHey Nas Jones you're correct! A callback is a function that is passed into another, similar to event handlers.
You can pass one function into another as a parameter as you mentioned and call the function in the body of the other. Using a callback gives us more control over when a function runs. In the case of event handlers, the function is called only when the event happens. If you haven't done this course it may be helpful before working on the asynchronous lessons
Nas Jones
7,849 PointsNas Jones
7,849 PointsHey reggie, i'm going to finish that course you recommended when i can and if i still don't understand it i'll come back to this and let you know. Thank you for helping.