title: Selecting random array elements and placing into another
body: <p>I have an array of strings and require just 4 of these (randomly) to be placed into another array. </p>
  
  <pre><code>var a = ["Orange", "Red", "Yellow", "Blue", "Black", "White", "Brown", "Green"];
  var b = [];
  function selectColours(){
      var toRandomise = a[Math.floor(Math.random() * 4)];
      b.push(toRandomise);
  }
  console.log(b);
  </code></pre>
  
  <p>My problem is that the Console shows nothing appearing.</p>