scope_2.js

function doImportantStuff() {
  var someVariable = "important stuff";
 
  console.log(someVariable); // "important stuff" 
  console.log(anotherVariable); // oops can't access that
}

function anotherImportantStuff() {
  var anotherVariable = "not so important";
}

doImportantStuff();
anotherImportantStuff();