this button("refresh") doesn't seems working as expected.
I couldn't see a decent sample for how exactly to use button("refresh")
Doc says link based buttons don't support enable,disable,refresh..
Links styled like buttons have all the same visual options as true form-based buttons below, but there are a few important differences. Link-based buttons aren't part of the button plugin and only just use the underlyingbuttonMarkup plugin to generate the button styles so the form button methods (enable, disable, refresh) aren't supported. If you need to disable a link-based button (or any element), it's possible to apply the disabled class ui-disabled yourself with JavaScript to achieve the same effect.
I tried changing button to
<input type='button' data-iconpos="right" data-icon="arrow-u" id="btn" value='Press Me'></input>
my error is diff
Uncaught cannot call methods on button prior to initialization; attempted to call method 'refresh'
below is directly manipulating css
$(this).parent().find(".ui-icon-arrow-u").removeClass("ui-icon-arrow-u").addClass("ui-icon-arrow-d");
