How to search hidden control inside a jquery control

I have a dialog that contains a grid.

I was trying to set the hidden value using the $('hiddenInputName').val('avalue') and get it using val method with no parameter but it does not seem to work.

I resolved back in doing it in document.getElementById('hiddenInputName').value = 'avalue'.

Is there a way to do it in jquery?

var abc = target.get(0).textContent;
 
// The jquery method Im trying
$('hiddenInputName').val(selectedKatasiki);
 
// The old style javascript that works
document.getElementById('hiddenInputName').value = abc;

Select allOpen in new window