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JavaScript

Posted by tayjohn
tayjohn
Courses Plus Student 1,595 Points

Passing an anonymous function as parameter in javascript

I am a bit uncertain regarding what actually occurs if you pass an anonymous function as a parameter when calling another function.

For instance I have the following:

getAllDishes = function (type, filter, cb) { 
  ...  
  cb(dishes); 
}

And then I call the function with the 3 parameters and one being an anonymous function:

getAllDishes(type, filter, function(dishes){
//some code here..
dishes; //does this contain the value from cb(dishes) above?
});

Does this mean that when I call getAllDishes, the "dishes" value in the parameter "function(dishes)" will be the dishes value in "cb(dishes)" ?

1 Answer

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

You seem to have the right idea.

Perhaps you're uncertain because of the re-use of the name "dishes"? The name of the parameter of the anonymous function is not important, only that the parameter was passed when it was invoked.