is autopostback available in jQuery or Ajax
&lt;select id="autosubmit" name="autosubmit" class="autosubmit"&gt;
    &lt;option value="1"&gt;Option 1&lt;/option&gt;
    &lt;option value="2"&gt;Option 2&lt;/option&gt;
&lt;/select&gt;


jQuery

$(document).ready(function () {
  $(".autosubmit").each(function (index) {
    $(this).change(function () {
      // write your custom trigger here.
    })
  });
});