title: Onchange event is not working well
body: <p>I created a following html page. </p>
  
  <pre><code>&lt;html&gt;
      &lt;head&gt;&lt;/head&gt;
      &lt;body&gt;
          &lt;input type="text" value="" id="Textbox" onchange="alert('text change');" /&gt;
          &lt;input type="button" value="" onclick="document.getElementById('Textbox').value = 'Hello';" /&gt;
      &lt;/body&gt;
  &lt;/html&gt;
  </code></pre>
  
  <p>When the entered text is inputted into the textbox, the onchange event is working well. I wrote a code that when the button is clicked, the 'Hello' text is inputted into the the textbox. But the onchange event of the textbox is not working well. How can I catch change event? Thanks.</p>