I can explain the difference between function declarations and function expressions.
I can explain what the value of this is in a normal function.
I can explain what the value of this is when called from the context of an object.
I can explain how to explicitly set the value of this in a function.
I can explain the difference between call and apply.
I can describe an case where I might need to use bind to avoid polluting the global scope.
I can explain how bind works.