问题描述
我们有一些代码位于 API 和谷歌电子表格之间,用于从 API 中提取股票数据,并将其显示在电子表格中。我们得到一个 API 调用,将它处理成一个 Javascript 对象,然后从那里做逻辑。
不幸的是,对于某些特定项目,我们遇到了库存水平为零的问题,这表明 for 循环无法正常工作。下面的例子:
// Example data from API call
var data = {
"Item": [
{
"WarehouseQuantity": {
"WarehouseID": "New York","Quantity": "4"
},"SKU": "PRODUCT-1"
}
]
}
// Loop through API data for each item
for (var x = 0; x < data.Item.length; x++) {
// Grab current item SKU
var currentSKU = data.Item[x].SKU;
var currentNewYorkStock = 0;
// Loop through list of warehouses and fetch QTY for each specific warehouse
for (var y = 0; y < data.Item[x].WarehouseQuantity.length; y++) {
// Warehouse - New York
if (data.Item[x].WarehouseQuantity[y].WarehouseID == "New York") {
Logger.log("Yes - New York has Stock");
currentNewYorkStock = data.Item[x].WarehouseQuantity[y].Quantity;
}
}
}
...
// End result is that we don't actually set the value for currentNewYorkStock,
它最终没有反映从 API 提供的信息(应该是 4,是 0)
本质上,第二个 for 循环的代码没有运行。这适用于其他项目,但不适用于某些项目。 for 循环在遍历对象方面的结构方式是否存在问题?我觉得我错过了一些非常简单的东西。
解决方法
如果 WarehouseQuantity 属性是一个包含一些城市库存的列表,你可能需要像这样修改数据结构:
// Example data from API call
var data = {
"Item": [
{
"WarehouseQuantity": [{
"WarehouseID": "New York","Quantity": "4"
},{
"WarehouseID": "DC","Quantity": "2"
}],"SKU": "PRODUCT-1"
}]
}
// Loop through API data for each item
for (var x = 0; x < data.Item.length; x++) {
// Grab current item SKU
var currentSKU = data.Item[x].SKU;
var currentNewYorkStock = 0;
// Loop through list of warehouses and fetch QTY for each specific warehouse
for (var y = 0; y < data.Item[x].WarehouseQuantity.length; y++) {
// Warehouse - New York
if (data.Item[x].WarehouseQuantity[y].WarehouseID == "New York") {
console.log("Yes - New York has Stock");
currentNewYorkStock = data.Item[x].WarehouseQuantity[y].Quantity;
}
}
}