篩選

返回具有與給定鍵值之一匹配的鍵屬性的對象的listObject。

類別

清單

函式語法

filter(<parameters>)

參數

簽名和返回的類型

filter(listObject, string, listString)

filter(listObject, string, listInteger)

filter(listObject, string, listDecimal)

filter(listObject, string, listDateTime)

filter(listObject, string, listDateTimeOnly)

filter(listObject, string, listDateOnly)

filter(listObject, string, listDuration)

filter(listObject, string, listBoolean)

返回listObject。

範例

以下是傳入事件「myevent」中傳遞的負載示例：

"productListItems": [{
   "id": "product1",
   "name": "the product 1",
   "price": 20
},{
   "id": "product2",
   "name": "the product 2",
   "price": 30
},{
   "id": "product3",
   "name": "the product 3",
   "price": 50
}]

可以使用以下表達式：

filter(
 @{myevent.productListItems},
 "id",
 ["product2", "product3", "product4"]
)

返回一個listObject，該對象包含兩個以"product2"和"product3"為id的對象。