<form name="form1" id="mainForm" method="post"enctype="multipart/form-data" action="<?php echo $_SERVER['PHP_SELF'];?>">
    <div class="card-body">
        <div class="row form-group">
            <div class="col col-md-2"><label for="text-input" class=" form-control-label">Товар:</label></div>
            <div class="col-12 col-md-10">
                <div class="input-group fieldGroup">
                    <input type="text" id="hiddenID" name="hiddenID[]" class="form-control" placeholder="ID Товара"/>
                    <input type="text" id="prod_id" name="prod_id[]" class="autoc form-control" placeholder="Товар" autocomplete="off" />
                    <input type="text" id="prod_count" name="prod_count[]" class="form-control" placeholder="Кол-во"/>
                <input type="text" id="product_price" name="prod_price[]" class="form-control" placeholder="Цена"/>
                <div class="input-group-addon">
                    <a href="javascript:void(0)" class="btn btn-success addMore"><span class="glyphicon glyphicon glyphicon-plus" aria-hidden="true"></span>+</a>
                </div>
            </div>
            </div>
        </div>

        <div class="row form-group" style="display: none;">
            <div class="col col-md-2"><label for="text-input" class=" form-control-label">Товар:</label></div>
            <div class="col-12 col-md-10">
                <div class="input-group fieldGroupCopy">
                    <input type="text" id="hiddenID" name="hiddenID[]" class="form-control" placeholder="ID Товара"/>
                    <input type="text" id="prod_id" name="prod_id[]" class="autoc form-control" placeholder="Товар" autocomplete="off" />
                    <input type="text" id="prod_count" name="prod_count[]" class="form-control" placeholder="Кол-во"/>
                    <input type="text" id="product_price" name="prod_price[]" class="form-control" placeholder="Цена"/>
                <div class="input-group-addon">
                    <a href="javascript:void(0)" class="btn btn-danger remove"><span class="glyphicon glyphicon glyphicon-plus" aria-hidden="true"></span>-</a>
                </div>
            </div>
            </div>
        </div>
    </div>
    <div class="card-footer">
        <input type="submit" id="submit" class="btn btn-primary" value="Оприходовать">
        <input type="reset" id="reset" class="btn btn-danger" value="Очистить форму">
    </div>
</form>

// Add new rows
    jQuery(document).ready(function(){
        //group add limit
        var maxGroup = 30;

        //add more fields group
        jQuery(".addMore").click(function(){
            if(jQuery('body').find('.fieldGroup').length < maxGroup){
                var fieldHTML = '<div class="input-group fieldGroup">'+jQuery(".fieldGroupCopy").html()+'</div>';
                jQuery('body').find('.fieldGroup:last').after(fieldHTML);
            }else{
                alert('Максимально можно добавить '+maxGroup+' товаров.');
            }
        });

        //remove fields group
        jQuery("body").on("click",".remove",function(){
            jQuery(this).parents(".fieldGroup").remove();
        });
    });


    // Autocomplete
    jQuery('.autoc').on("focus", function(){
          jQuery(this).autocomplete({
           minLength: 2,
           source: "autocomplete_name.php",
            select: function( event, ui ) {
                event.preventDefault();
                jQuery("#prod_id").val(ui.item.label);
                jQuery("#hiddenID").val(ui.item.id);
            }
            });
    });