javascript function within the function

Question

So I was wondering if it is possible to access a variable (which has a value of function) from outside the scope. I have code that goes something like this:

function parentFunction(){
  var childFunction = function() {
    // do something
  }
}

$(function(){
  // need to access childFunction() here.
});

Answer 1

var childFunction;

function parentFunction(){
  childFunction = function() {
    // do something
  }
}

$(function(){
  childFunction();
});