Example of JS hoisting

hoist.js

// In this case the variable hoisted ends up being declared 
// but undefined before the if statement, because it is hoisted
(function(){
  try {
    if (hoisted) {
      var hoisted = true;
      console.log("This will not get printed")
    }else{
      console.log("This will be printed, because hoisted has been declared, but is not set to a truthy value.")
    }
  }catch(err){
    console.log("You might expect a reference error to be caught, but nope! This will never be printed.");
  } 
})();

// This has a reference error, because the interpreter has no
// idea what "hoist" is
(function(){
  try {
    if (hoist) {
      var hoisted = true;
      console.log("This will not get printed, and the if check will throw a reference error.")
    }
  }catch(err){
    console.log(err);
  } 
})();