Call function with same arguments as parent [duplicate]

Question

I've got a lot of function that act as an intermediate entry-point for other functions (i.e functions that just call other functions).

• How can I call the inner function with the same arguments as the parent function without respecifying them?

  var foo = function(arg1, arg2) {
    fooBar(argumentsOfFoo);  
  }
  

• A possible solution is passing arrays but I'd like to avoid that.

Answer 1

You use .apply() and the arguments object:

var foo = function(arg1, arg2) {
  fooBar.apply(this, arguments);  
}

In modern versions of Javascript, you can use rest parameters:

function foo(...args) {
  fooBar(...args);  
}