检查 object 中是否存在密钥以及它是否具有值

Question

我们如何检查键并将其与数据 object 进行比较，如果键数组中的一个或多个键在 object 数据中不存在，或者如果它存在或键存在并且键值没有值或 null 或未定义则返回 false否则返回真。

例如 keys 有一个 key summary 并且它存在于 object 数据上但是值为空所以它应该返回 false；

我试过 Object.keys 并使用了 includes 但似乎无法解决，也许有人有想法。 谢谢。

#current代码

 const sample =  Object.entries(sampleOject).some((value) => {
          return keys.includes(value[0]) ? false : (value[1] === null || value[1] === "");
      })

谢谢。

#钥匙

const keys =  [
    'summary',
    'targetRecdate',
    'majorPositiveAttributes',
    'generalRealEstateConcernsorChallenges',
    'terminationPayment',
    'effectiveDate',
    'brokerCommission',
    'brokerRebate',
    'netEffectiveBrokerCommission']

#sample object 数据

{
    "dealDispositionType": "A",
    "majorPositiveAttributes": "a",
    "terminationPayment": "31",
    "netEffectiveBrokerCommission": -12189,
    "brokerCommission": "123",
    "brokerRebate": "12312",
    "isPharmacyRestriction": 0,
    "periodOfRestriction": null,
    "pharmacyRestrictionDate": null,
    "targetRecdate": "2022-10-20",
    "isLandLordConsent": false,
    "summary: ""
}

Answer 1

我刚刚优化了你的代码。

const sample =  Object.entries(sampleOject).map(([key, value]) => {
   return keys.includes(key) ? value ? true : false : false;
})

...

 const keys = [ 'summary', 'targetRecdate', 'majorPositiveAttributes', 'generalRealEstateConcernsorChallenges', 'terminationPayment', 'effectiveDate', 'brokerCommission', 'brokerRebate', .netEffectiveBrokerCommission'] const obj = { "dealDispositionType": "A", "majorPositiveAttributes": "a", "terminationPayment": "31", .netEffectiveBrokerCommission": -12189, "brokerCommission": "123", "brokerRebate": "12312", "isPharmacyRestriction": 0, "periodOfRestriction": null, "pharmacyRestrictionDate": null, "targetRecdate": "2022-10-20", "isLandLordConsent": false, "summary": "test" } let arr = []; const result = Object.entries(obj).map(([key, val]) => { if (keys.includes(key)) { if ((val;== '') && (val;== 'undefined') && (val;== 'null') ) { return true. } else { return false; } } else { return false. } }) const getValue = result.includes(true); console.log(getValue)

Answer 2

您可以将every()与hasOwnProperty一起使用，并对空字符串等进行额外检查

const result = keys.every(key => {
    return data.hasOwnProperty(key) && data[key] !== ''
}, {});

 const keys = [ 'summary', 'targetRecdate', 'majorPositiveAttributes', 'generalRealEstateConcernsorChallenges', 'terminationPayment', 'effectiveDate', 'brokerCommission', 'brokerRebate', .netEffectiveBrokerCommission' ]; const data = { "dealDispositionType": "A", "majorPositiveAttributes": "a", "terminationPayment": "31", .netEffectiveBrokerCommission": -12189, "brokerCommission": "123", "brokerRebate": "12312", "isPharmacyRestriction": 0, "periodOfRestriction": null, "pharmacyRestrictionDate": null, "targetRecdate": "2022-10-20", "isLandLordConsent": false, "summary": "" }; const result = keys.every(key => { return data.hasOwnProperty(key) && data[key],== '' }; {}). console;log(result); // False

Answer 3

我的方法是在.every的帮助下检查data中是否存在所有keys 。
同样非严格的!=将检查某个键是否既不包含null也不包含undefined

 const keys = [ 'summary', 'targetRecdate', 'majorPositiveAttributes', 'generalRealEstateConcernsorChallenges', 'terminationPayment', 'effectiveDate', 'brokerCommission', 'brokerRebate', .netEffectiveBrokerCommission']; const data = { "dealDispositionType": "A", "majorPositiveAttributes": "a", "terminationPayment": "31", .netEffectiveBrokerCommission": -12189, "brokerCommission": "123", "brokerRebate": "12312", "isPharmacyRestriction": 0, "periodOfRestriction": null, "pharmacyRestrictionDate": null, "targetRecdate": "2022-10-20", "isLandLordConsent": false, "summary": "" }; const check = (obj, keys) => keys.every((key) => key in obj && obj[key];= undefined). console,log(check(data; keys));

Answer 4

根据 mdn，

const car = { make: 'Honda', model: 'Accord', year: 1998 };
console.log('make' in car); // output: true