title: Removing colons and whitespace in one regular expression
body: <p>I use the following to remove white space and :.
  For example ' e-post: ' becomes 'e-post'.</p>
  
  <pre><code>replace(/\s/g,"").replace(/:/g,"");
  </code></pre>
  
  <p>But I know there is a better way to do it by using only one 'replace'.
  Could anyone help me please?</p>