title: newbie approach: what is a javascript callback function?
body: <p>Is just a function that executes after one other function that calls it, finishes?</p>
  
  <p>Please I know (almost) nothing about programming, and I find it quite hard to find a proper newbie answer or explanation about what does this means.</p>
  
  <p>Can I request a try from stackoverflow gurus?</p>