Radio button not checked when again loading form with ajax

Question

I have an element which I use for upadting values in the database.

<p id="valuta">
  <label for="valuta">Valuta:</label><br/>
  <select id="valuta2" name="valuta2">
    <option value="USD">US </option>
    <option value="EUR">EUR </option>
    <option value="RSD">RSD </option>
  </select></br>
  Konvertuj cenu?</br>
  <input type="radio" id='conversion' class='conversion' name="conversion" checked="checked" value="1">DA<br>
  <input type="radio" class="conversion" name="conversion" value="2">NE
</p></br>

But when I try to load this element my radio button isnt checked. I am doing operation with ajax.

This is what I try after ajax operation in the success part:

 $('#conversion').prop('checked');
 $('#conversion').attr('checked');
 $('#conversion').attr('checked','checked')

no result? Any idea?

Answer 1

.prop('checked', ...)可以为true或false ，因此正确的代码为：

$('#conversion').prop('checked', true);