jQuery code for increment or reduction by “+”, ” -” button click

jQuery code for increment or reduction by “+”, ” -” button click

/*  
    Jquery for for Quantity Plus-Minus Button
    @ code from https://code.mukto.info
*/
add_action( 'wp_footer', 'mukto_add_cart_quantity_plus_minus' );
function mukto_add_cart_quantity_plus_minus() {
   wc_enqueue_js( "   
           
      $(document).on( 'click', 'button.plus, button.minus', function() {
  
         var qty = $( this ).parent( '.quantity' ).find( '.qty' );
         var val = parseFloat(qty.val());
         var max = parseFloat(qty.attr( 'max' ));
         var min = parseFloat(qty.attr( 'min' ));
         var step = parseFloat(qty.attr( 'step' ));
 
         if ( $( this ).is( '.plus' ) ) {
            if ( max && ( max <= val ) ) {
               qty.val( max ).change();
            } else {
               qty.val( val + step ).change();
            }
         } else {
            if ( min && ( min >= val ) ) {
               qty.val( min ).change();
            } else if ( val > 1 ) {
               qty.val( val - step ).change();
            }
         }
 
      });
        
   " );
}