title: How to get Javascript Select box's selected text
body: <p>This things works perfectly </p>
  
  <pre><code>&lt;select name="selectbox" onchange="alert(this.value)"&gt;
  </code></pre>
  
  <p>But I want to select the text. I tried in this way</p>
  
  <pre><code>&lt;select name="selectbox" onchange="alert(this.text)"&gt;
  </code></pre>
  
  <p>It shows undefined.
  I found how to use DOM to get text. But I want to do this in this way, I means like using just this.value.</p>