title: 'e' in javascript numbers
body: <p>I need to understand the following:</p>
  
  <p>when I type <code>4e4</code> in Google Chrome's console it returns <code>40000</code>.</p>
  
  <p>Can anyone help me to understand what is <code>e</code> in javascript numbers and what is the algorithm working for this?</p>
  
  <p>Thanks in advance</p>