显示为undefined的参数 - 导出的函数JavaScript

Question

我导出的函数参数值返回为undefined，我的其他函数以相同的方式工作。希望你能帮忙！

顺便说一下 - 我知道并不是所有的参数都包括在内，但直到这一点它还没有工作！

我的函数在我的帖子Requests.js文件中不起作用：

exports.getRefundCalculationApiCall = function (itemId, ngrokUrl, domain, orderId) {
    console.log('ngrokurl 2' + ngrokUrl)
    console.log('domain2' + domain)
    console.log('orderId2' + orderId)
    console.log('itemId2' + itemId)
    httpRequest.post(
        `${ngrokUrl}/${domain}/${orderId}`,
        {
            json:
                {
                    "line_items": [
                        {
                            "line_item_id": itemId, "quantity": 1
                        }
                    ]
                }
        },
        function (error, resp, body) {
            if (!error && resp.statusCode == 200) {
                console.log(body)
                console.log('refund line items transactions information' + JSON.stringify(body.refund.transactions[0]));
                console.log('refund line items +++ information THIS IS THE ONE' + JSON.stringify(body.refund.refund_line_items[0]));
                refundAmount1 = JSON.stringify(body.refund.refund_line_items[0].price);
                order_id1 = body.refund.transactions[0].order_id;

                amount1 = body.refund.refund_line_items[0].amount;
                // constructing message to front-end with the refund expense.
                response = `Your refund amount would be ${refundAmount1}, for the item: ${itemName1}. Do you accept this and wish to initiate the returns process?`
                console.log('RESPONSE from getrefundCalc - work to FE?' + response)


                data = [details.chatuser, response]
                io.of('/main').to(socket.id).emit('response', data);

            }
            else {
                console.log('error' + error)
            }
        }
    )
}

这是我试图在我的index.js文件中调用它：

console.log('ngrokurl' + ngrokUrl)
console.log('domain' + domain)
console.log('orderId' + orderId)
console.log('itemId' + itemId)
shopifyApiRequest.getRefundCalculationApiCall((itemId, ngrokUrl, domain, orderId));

我的错误：

ngrokurl 2undefined
domain2undefined
orderId2undefined
itemId2594597937215
errorError: Invalid URI "undefined/undefined/undefined"

我期待一个标准的回应。我有什么明显缺失的吗？

Answer 1

在index.js文件中，您将使用参数周围的两组括号调用getRefundCalculationApiCall方法：

shopifyApiRequest.getRefundCalculationApiCall((itemId, ngrokUrl, domain, orderId));

这应该在参数周围只写一组括号：

shopifyApiRequest.getRefundCalculationApiCall(itemId, ngrokUrl, domain, orderId);

额外的括号集将所有四个参数分组为一个，然后将其作为itemId参数传递。您最终在orderId语句中打印console.log('itemId2' + itemId)值。其他三个参数被忽略，因此未定义。这是一个简单的例子：

function test(arg1, arg2, arg3, arg4) {
  console.log('arg1: ' + arg1);
  console.log('arg2: ' + arg2);
  console.log('arg3: ' + arg3);
  console.log('arg4: ' + arg4);
}

console.log('Individual arguments:\n');
test('one', 'two', 'three', 'four');

console.log('Grouped arguments:\n');
test(('one', 'two', 'three', 'four'));