Question

我具有下面的响应正文（json），我想进行以下检查

1）检查'id = 5'是否存在

Answer 1

您可以使用some方法来检查数组是否满足某些条件：

const result = data.some(s=> s.id == 5 && s.name =='John Smith');

const data = [
  {
    "id": 1,
    "name": "George Smith",
    "username": "John",
    "email": "John@may.biz",
    "address": {
      "street": "Kennedy",
      "suite": "Apt. 332",
      "city": "Paris",
      "zipcode": "12322-3874",
      "geo": {
        "lat": "-57.3189",
        "lng": "81.1496"
      }
    },
    "phone": "1-999-736-444 x343343",
    "website": "web.org",
    "company": {
      "name": "Amaon",
      "catchPhrase": "Multi-layered",
      "bs": "e-markets"
    }
  },
  {
    "id": 5,
    "name": "John Smith",
    "username": "johny",
    "email": "johny@john.com",
    "address": {
      "street": "Oxford",
      "suite": "Suite 334",
      "city": "London",
      "zipcode": "12345",
      "geo": {
        "lat": "-32.3434",
        "lng": "45.4543"
      }
    },
    "phone": "(121)954-3457",
    "website": "smith.info",
    "company": {
      "name": "Law LLC",
      "catchPhrase": "Customer first",
      "bs": "E2E system"
    }
  }
]


const result = data.some(s=> s.id == 5 && s.name =='John Smith');
console.log(`Has John Smith: ${result}`)

const hasJoseph = data.some(s=> s.id == 5 && s.name =='Joseph');
console.log(`Has Joseph: ${ hasJoseph }`);

Answer 2

function myFunction() {
var ages = [
  {
    "id": 1,
    "name": "George Smith",
    "username": "John",
    "email": "John@may.biz",
    "address": {
      "street": "Kennedy",
      "suite": "Apt. 332",
      "city": "Paris",
      "zipcode": "12322-3874",
      "geo": {
        "lat": "-57.3189",
        "lng": "81.1496"
      }
    },
    "phone": "1-999-736-444 x343343",
    "website": "web.org",
    "company": {
      "name": "Amaon",
      "catchPhrase": "Multi-layered",
      "bs": "e-markets"
    }
  },
  {
    "id": 5,
    "name": "John Smith",
    "username": "johny",
    "email": "johny@john.com",
    "address": {
      "street": "Oxford",
      "suite": "Suite 334",
      "city": "London",
      "zipcode": "12345",
      "geo": {
        "lat": "-32.3434",
        "lng": "45.4543"
      }
    },
    "phone": "(121)954-3457",
    "website": "smith.info",
    "company": {
      "name": "Law LLC",
      "catchPhrase": "Customer first",
      "bs": "E2E system"
    }
  }
];
  ages.filter(function(obj) {
      return obj.id == 5 && obj.name == 'John Smith';
    })
    .map(function(obj) {
    	console.log(obj)
      return obj;
    });
}
//This method will return the object that matches your condition.
myFunction();

希望这会有所帮助：）

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