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JavaScript

Posted by Erwan EL
Erwan EL
7,669 Points

Callback closure promises...

Hi i'm a little confuse, what is the difference between: - callback function - recursive functions - closures - promise All those concept look a bit like the same for me and i don't understand in which case are we using anyone of them.

2 Answers

Steven Parker
Steven Parker
243,318 Points
Steven Parker
Steven Parker
243,318 Points

Here are some thumbnail definitions:

  • a callback function is a function expression passed as an argument to another function to be called later
  • a recursive function is a function that calls itself (under certain conditions)
  • a closure is a function that encloses another function (and variables) to create a private "scope"
  • a promise is an object that represents the eventual completion (and value) of an asynchronous process

These are some pretty advanced concepts, so even these definitions may not make much sense. But as you continue in your studies, you will get to points in the courses where you will get more detailed explanations and also see examples of how they are used.

Erwan EL
Erwan EL
7,669 Points
Erwan EL
Erwan EL
7,669 Points

Thanks a lot, it really helped, i couldn't put a word on those different concept, couldn't have done better than you did.