The Apply Invocation Pattern

apply.js

myFn = function(msg){ 
  return msg + this.status;  
}

o = { status: "killing it" }

myFn.apply(o, ["Your status is: "])
//>> "Your status is: killing it"


//call apply on a function, first arg is the value of "this" inside the fn, 
//2nd arg is an array of parameters for the function.