title: javascript $(this).find and innerHTML
body: <pre><code> document.getElementById("test").innerHTML += " hello two";
  </code></pre>
  
  <p>That works for me. But only for the first 'test' division on my page.
  I want to add the innerHTML inside where I want it.</p>
  
  <p>so I have a button and when I click it something like this must happen:</p>
  
  <pre><code>$this.find("#test").innerHTML += " hello two";
  </code></pre>
  
  <p>But this second code won't work.</p>
  
  <p>What am I doing wrong?</p>