title: Enable a button on textarea value change
body: <p>I have a textarea in my form. Now I want to enable a button once there is a change in the text of the textarea. </p>
  
  <p>I tried using <code>onchange</code> event on the textarea, but, while using it, the browser wants me to click outside the textarea to enable the button, even though I changed some text in the textarea.</p>
  
  <p>My requirement is to enable the button, the moment I change the text.</p>
  
  <p>I have written this function <code>onclick</code> of the textarea:</p>
  
  <pre><code>function enableUpdateButton() {
  
      document.getElementById("button").disabled = false;
  
  }
  </code></pre>
  
  <p>What change should I do?</p>