check/uncheck an input(checkbox) php variable

Question

I have the php variable $optquaninp = "<input type=\\"checkbox\\" name=\\"optid".$o['id']."\\" value=\\"1\\"/>"; and I want to set it as checked/unchecked from a script.

Specifically, I want to change its state by clicking on a card. So I applied script below

<script>
$('.card-deck-wrapper').on('click', function(event) {
var val = "<?php echo $optid.$o['id'] ?>";
document.getElementByName("optid1").checked =false;

});
</script>

It doesn't work!

Answer 1

Try using jQuery.

    $('.card-deck-wrapper').on('click', function(event) {
          var val = "<?php echo $optid.$o['id'] ?>";

         // jQuery 1.6+
         // Use the new .prop() method:
            $('input[name='+val+']').prop('checked', true);
             $('input[name='+val+']').prop('checked', false);

         // jQuery 1.5.x and below
         // The .prop() method is not available, so you need to use .attr().
           $('input[name='+val+']').attr('checked', true);
           $('input[name='+val+']').attr('checked', false);

    });