title: How to replace all character with Regex
body: <p>I have a string like this: <code>How to replace all character with Regex</code></p>
  
  <p>I would like each character to be wrapped by its own  tag set, as in:</p>
  
  <pre><code>&lt;span&gt;H&lt;/span&gt;&lt;span&gt;o&lt;/span&gt;&lt;span&gt;w&lt;/span&gt;&lt;span&gt; &lt;/span&gt;&lt;span&gt;t&lt;/span&gt;&lt;span&gt;o&lt;/span&gt;&lt;span&gt; &lt;/span&gt;&lt;span&gt;r&lt;/span&gt;&lt;span&gt;e&lt;/span&gt;&lt;span&gt;p&lt;/span&gt;&lt;span&gt;l&lt;/span&gt;&lt;span&gt;a&lt;/span&gt;&lt;span&gt;c&lt;/span&gt;&lt;span&gt;e&lt;/span&gt;&lt;span&gt; &lt;/span&gt;&lt;span&gt;a&lt;/span&gt;&lt;span&gt;l&lt;/span&gt;&lt;span&gt;l&lt;/span&gt;&lt;span&gt; &lt;/span&gt;&lt;span&gt;c&lt;/span&gt;&lt;span&gt;h&lt;/span&gt;&lt;span&gt;a&lt;/span&gt;&lt;span&gt;r&lt;/span&gt;&lt;span&gt;a&lt;/span&gt;&lt;span&gt;c&lt;/span&gt;&lt;span&gt;t&lt;/span&gt;&lt;span&gt;e&lt;/span&gt;&lt;span&gt;r&lt;/span&gt;&lt;span&gt; &lt;/span&gt;&lt;span&gt;w&lt;/span&gt;&lt;span&gt;i&lt;/span&gt;&lt;span&gt;t&lt;/span&gt;&lt;span&gt;h&lt;/span&gt;&lt;span&gt; &lt;/span&gt;&lt;span&gt;R&lt;/span&gt;&lt;span&gt;e&lt;/span&gt;&lt;span&gt;g&lt;/span&gt;&lt;span&gt;e&lt;/span&gt;&lt;span&gt;x&lt;/span&gt;
  </code></pre>
  
  <p>How can I do this using regular expressions and Javascript?
  Thanks!</p>