Closures

function packBox(item) {
  // Code that puts item in the box
  console.log(item);

  function addressPackage(address) {
    // Code that writes the address label
    console.log(address + '. My initialised value was: ' + item + '');
  }
  return addressPackage;
}

var closureDemo = packBox('Initialising with a stored value')
// do "other things"
console.log('other things')
closureDemo('Ive done "other things" and now Im calling closureDemo')


// can also be run like:

var closureDemo = packBox('initilisation value')('data we might have retrieved from another site ajax call');
closureDemo;