Jquery: append text into input
<p>Trying to append text into input after radio check.
Any idea? <a href="http://plnkr.co/edit/HvEBQa2pF43QfiNuFrkT?p=preview" rel="nofollow">http://plnkr.co/edit/HvEBQa2pF43QfiNuFrkT?p=preview</a></p>

<pre><code>$("#opt1").click(function(){
  if ($(this).is(":checked")) {
    $("#result").append("Option1 is checked");
  }
});
</code></pre>