javascript - 从对象数组中的对象中检索数据

Question

我有一个这样的对象列表。

我现在陷入困境，无法弄清楚如何通过提交 key 来检索对象的值

"ListOfObjects": [
    {
        "SomethingToRetrieve": "This Is The First Value"
    },
    {
        "AnotherThingToRetrieve": "This Is Another Value "
    },
    {
        "LastToRetrieve": "This Is the Last Value"
    }
]

我想通过创建一个函数:

retrieveValue(Key){
    // by giving as Example AnotherThingToRetrieve
    // It will return the Value of this key 
    //return "This Is Another Value "
}

Answer 1

您可以过滤具有该键的所有对象，然后返回第一个匹配对象的值。如果您在末尾省略 [0]，您将获得所有匹配值的数组。

var listOfObjects = [
    {
        "SomethingToRetrieve": "This Is The First Value"
    },
    {
        "AnotherThingToRetrieve": "This Is Another Value "
    },
    {
        "LastToRetrieve": "This Is the Last Value"
    }
]


const retrieveValue = key => listOfObjects.filter(x => x[key]).map(x => x[key])[0];

console.log(retrieveValue("AnotherThingToRetrieve"))