Multiple Row Products and Edit

This is a POS page. I added multiple products. Then I changed the cutting charge for one product, but the cutting charge for all products was updated.

1. My editModal

 <div id="editModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true" class="modal fade text-left">
                <div role="document" class="modal-dialog">
                    <div class="modal-content">
                        <div class="modal-header">
                            <h5 id="modal_header" class="modal-title"></h5>
                            <button type="button" data-dismiss="modal" aria-label="Close" class="close"><span aria-hidden="true"><i class="dripicons-cross"></i></span></button>
                        </div>
                        <div class="modal-body">
                            <form>
                                <div class="row modal-element">
                                    <div class="col-md-4 form-group">
                                        <label>{{trans('file.Quantity')}}</label>
                                        <input type="text" name="edit_qty" class="form-control numkey">
                                    </div>
                                    <div class="col-md-4 form-group">
                                        <label>{{trans('file.Unit Discount')}}</label>
                                        <input type="text" name="edit_discount" class="form-control numkey">
                                    </div>
                                    <div class="col-md-4 form-group">
                                        <label>{{trans('file.Unit Price')}}</label>
                                        <input type="text" name="edit_unit_price" class="form-control numkey" step="any">
                                    </div>
                                    <?php
                                        $tax_name_all[] = 'No Tax';
                                        $tax_rate_all[] = 0;
                                        foreach($lims_tax_list as $tax) {
                                            $tax_name_all[] = $tax->name;
                                            $tax_rate_all[] = $tax->rate;
                                        }
                                    ?>
                                    <div class="col-md-4 form-group">
                                        <label>{{trans('file.Tax Rate')}}</label>
                                        <select name="edit_tax_rate" class="form-control selectpicker">
                                            @foreach($tax_name_all as $key => $name)
                                            <option value="{{$key}}">{{$name}}</option>
                                            @endforeach
                                        </select>
                                    </div>
                                    <div id="edit_unit" class="col-md-4 form-group">
                                        <label>{{trans('file.Product Unit')}}</label>
                                        <select name="edit_unit" class="form-control selectpicker">
                                        </select>
                                    </div>
                                    <div class="col-md-4 form-group">
                                        <label>{{trans('file.Cutting Charge')}}</label>
                                        <input type="text" name="cutting_charge" id="cutting_charge" class="form-control numkey">
                                    </div>
                                </div>
                                <button type="button" name="update_btn" class="btn btn-primary">{{trans('file.update')}}</button>
                            </form>
                        </div>
                    </div>
                </div>
            </div>

1. My function

function calculateRowProductData(quantity) {
    if(product_type[pos] == 'standard')
        unitConversion();
    else
        row_product_price = product_price[rowindex];
    if (tax_method[rowindex] == 1) {
        var net_unit_price = row_product_price - product_discount[rowindex];
        var tax = net_unit_price * quantity * (tax_rate[rowindex] / 100);
        var sub_total = (net_unit_price * quantity) + tax;

        if(parseFloat(quantity))
            var sub_total_unit = sub_total / quantity;
        else
            var sub_total_unit = sub_total;
    }
    else {
        var sub_total_unit = row_product_price - product_discount[rowindex];
        var net_unit_price = (100 / (100 + tax_rate[rowindex])) * sub_total_unit;
        var tax = (sub_total_unit - net_unit_price) * quantity;
        var sub_total = sub_total_unit * quantity;
    }

     // Add cutting charge calculation
     var cutting_charge = parseFloat($('input[name="cutting_charge"]').val()) || 0;
    sub_total += cutting_charge * quantity;

    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.discount-value').val((product_discount[rowindex] * quantity).toFixed({{$general_setting->decimal}}));
    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.tax-rate').val(tax_rate[rowindex].toFixed({{$general_setting->decimal}}));
    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.net_unit_price').val(net_unit_price.toFixed({{$general_setting->decimal}}));
    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.tax-value').val(tax.toFixed({{$general_setting->decimal}}));
    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.product-price').text(sub_total_unit.toFixed({{$general_setting->decimal}}));
    // Update the display of subtotal in the table
    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.sub-total').text(sub_total.toFixed({{$general_setting->decimal}}));
    $('table.order-list tbody tr:nth-child(' + (rowindex + 1) + ')').find('.subtotal-value').val(sub_total.toFixed({{$general_setting->decimal}}));

    localStorageProductDiscount.splice(rowindex, 1, (product_discount[rowindex] * quantity).toFixed({{$general_setting->decimal}}));
    localStorageTaxRate.splice(rowindex, 1, tax_rate[rowindex].toFixed({{$general_setting->decimal}}));
    localStorageNetUnitPrice.splice(rowindex, 1, net_unit_price.toFixed({{$general_setting->decimal}}));
    localStorageTaxValue.splice(rowindex, 1, tax.toFixed({{$general_setting->decimal}}));
    localStorageSubTotalUnit.splice(rowindex, 1, sub_total_unit.toFixed({{$general_setting->decimal}}));
    localStorageSubTotal.splice(rowindex, 1, sub_total.toFixed({{$general_setting->decimal}}));
    localStorage.setItem("localStorageProductDiscount", localStorageProductDiscount);
    localStorage.setItem("localStorageTaxRate", localStorageTaxRate);
    localStorage.setItem("localStorageNetUnitPrice", localStorageNetUnitPrice);
    localStorage.setItem("localStorageTaxValue", localStorageTaxValue);
    localStorage.setItem("localStorageSubTotalUnit", localStorageSubTotalUnit);
    localStorage.setItem("localStorageSubTotal", localStorageSubTotal);

    calculateTotal();
}