title: jquery , append html
body: <p>I have this kind of HTML :</p>
  
  <pre><code>&lt;h1&gt; Text1 Text2 &lt;/h1&gt;
  </code></pre>
  
  <p>I want via jquery to change this HTML in : </p>
  
  <pre><code>&lt;h1&gt; &lt;span&gt;Text1&lt;/span&gt; Text2 &lt;/h1&gt;
  </code></pre>
  
  <p>I my head is coming just append and regular expression (maybe you have another ideas ) , unfortunately I don't have experience with "regex" . The "Text1" is changeable .. It should be the first  text in "h1" 
  Can somebody help me !</p>
  
  <p>Thanks !</p>