I was given this chunk of code to place in my html page but I know nothing about javascript so I have no idea where to place it and what kind of tag to place it in.

Can someone please help me.

Thanks

Code:

$('input[type=radio]').change(function() {

$('input[type=radio]').each(function(index) {
  $(this).closest('tr').removeClass('selected');
});

$(this).closest('tr').addClass('selected');
});