從復雜對象中找到匹配的對象結構

Question

我有一個像下面這樣的示例對象結構

盡管存在三種類型的地址（ address, employeeAddress, shippingAddress ），但它們都表示相同的數據結構，稱為 address。 從這個對象結構中，我需要從上述結構中獲取所有地址。對象結構可能是使用 JSON Schema 格式定義的。 此外，地址不必總是作為同一層次結構的一部分。 例如在上面， shippingAddress和employeeAddress處於不同的層次結構。 我嘗試使用對象的 hasOwnProperty，但沒有按預期工作。 lodash的filter方法也沒有得到太多幫助。 有沒有一種優雅的方法來實現這一目標？

{
  "user": {
    "firstName": "John",
    "lastName": "Steve",
    "address": {
      "houseNo": "24",
      "city": "CA",
      "country": {
        "code": "US",
        "name": "United States"
      }
    }
  },
  "employee": {
    "employeeID": "443434",
    "employeeName": "Steve",
    "employeeAddress": {
      "houseNo": "244",
      "city": "NJ",
      "country": {
        "code": "US",
        "name": "United States"
      }
    }
  },
  "assistant": {
    "assitantID": "443434",
    "employeeName": "Steve",
    "shippingDetails": {
      "shippingAddress": {
        "houseNo": "2444",
        "city": "LA",
        "country": {
          "code": "US",
          "name": "United States"
        }
      }
    }
  }
}

Answer 1

您可以為此使用遞歸並創建一個接受輸入數據和模式對象的函數。 然后在每個級別上，另一個函數檢查當前對象是否與模式結構匹配。

 const data = {"user":{"firstName":"John","lastName":"Steve","address":{"houseNo":"24","city":"CA","country":{"code":"US","name":"United States"}}},"employee":{"employeeID":"443434","employeeName":"Steve","employeeAddress":{"houseNo":"244","city":"NJ","country":{"code":"US","name":"United States"}}},"assistant":{"assitantID":"443434","employeeName":"Steve","shippingDetails":{"shippingAddress":{"houseNo":"2444","city":"LA","country":{"code":"US","name":"United States"}}}}} const schema = { houseNo: null, country: null, city: null } function match(o1, o2) { return Object.keys(o1).every(k => k in o2); } function get(data, schema) { return Object.keys(data).reduce((r, e) => { if (match(data[e], schema)) r.push(data[e]); else if (typeof data[e] == 'object') r.push(...get(data[e], schema)); return r; }, []) } const result = get(data, schema); console.log(result)

Answer 2

這是這里找到的一個簡單的 JS 版本

 var user = { "user": { "firstName": "John", "lastName": "Steve", "address": { "houseNo": "24", "city": "CA", "country": { "code": "US", "name": "United States" } } }, "employee": { "employeeID": "443434", "employeeName": "Steve", "employeeAddress": { "houseNo": "244", "city": "NJ", "country": { "code": "US", "name": "United States" } } }, "assistant": { "assitantID": "443434", "employeeName": "Steve", "shippingDetails": { "shippingAddress": { "houseNo": "2444", "city": "LA", "country": { "code": "US", "name": "United States" } } } } } function findProp(obj, prop) { var result = {}; function recursivelyFindProp(o, keyToBeFound) { Object.keys(o).forEach(function (key) { if (typeof o[key] === 'object') { if (key.toLowerCase().indexOf(keyToBeFound) !==-1) result[key]=o[key]; recursivelyFindProp(o[key], keyToBeFound); } else { if (key.toLowerCase().indexOf(keyToBeFound) !==-1) result[key]=o[key]; } }); } recursivelyFindProp(obj, prop); return result; } console.log( findProp(user, "address") )

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