title: Regex to filter out certain characters
body: <p>What would a regex string look like if you were provided a random string such as :</p>
  
  <blockquote>
    <p>"u23ntfb23nnfj3mimowmndnwm8"</p>
  </blockquote>
  
  <p>and I wanted to filter out certain characters such as  2, b, j, d, g, k and 8? </p>
  
  <p>So in this case, the function would return <code>'2bjd8'</code>.</p>
  
  <p>There's a lot of literature on the internet but nothing straight to the point. It shouldn't be too hard to create a regex to filter the string right?</p>
  
  <p>ps. this is not homework but I am cool with daft punk</p>