JavascriptのコレクションはLodashで値を見つける

Question

私は以下のような配列を持っています。出発地と到着地の中のどの値を知りたいですか？

アレイ：

[ "AYT"、 "IST"、 "ESB"、 "ADB"]

がどのように私は扱うことができ

：私はこのような新しい配列にしたい

var data = { 
    "origin": "Antalya", 
    "destination": "IST", 

    "flights": [{ 
     "provider": "thy", 
     "time": "2017-07-07 10:30", 
     "legs": [{ 
      "departure": "AYT", 
      "arrival": "IST" 
     }] 
    },{ 
     "provider": "thy", 
     "time": "2017-07-07 14:30", 
     "legs": [{ 
      "departure": "AYT", 
      "arrival": "ESB" 
     },{ 
      "departure": "ESB", 
      "arrival": "IST" 
     }] 
    },{ 
     "provider": "pegasus", 
     "time": "2017-07-07 06:30", 
     "legs": [{ 
      "departure": "AYT", 
      "arrival": "ADB" 
     },{ 
      "departure": "ADB", 
      "arrival": "IST" 
     }] 
    }] 
}; 

それはロダッシュを使用していますか？

Answer 1

はここ液を用いlodashです最初に、脚の平坦な配列を取得し、各脚のプロパティの値の平坦な配列に変換してから、最終的にユニークな値を取得します値。

Answer 2

まあ、あなたのデータをループし、文字列配列を作成し、同様に、uniqの機能を使用します。

let result = _(data.flights) 
    .flatMap('legs') 
    .flatMap(_.values) 
    .uniq() 
    .value(); 

：

var data = {"origin":"Antalya","destination":"IST","flights":[{"provider":"thy","time":"2017-07-07 10:30","legs":[{"departure":"AYT","arrival":"IST"}]},{"provider":"thy","time":"2017-07-07 14:30","legs":[{"departure":"AYT","arrival":"ESB"},{"departure":"ESB","arrival":"IST"}]},{"provider":"pegasus","time":"2017-07-07 06:30","legs":[{"departure":"AYT","arrival":"ADB"},{"departure":"ADB","arrival":"IST"}]}]}; 
 

 
var legs = []; 
 
_.each(data.flights, flight => { 
 
    _.each(flight.legs, leg => { 
 
    legs.push(leg.departure); 
 
    legs.push(leg.arrival); 
 
    }); 
 
}); 
 

 
console.log(_.uniq(legs));

<script src="https://cdn.jsdelivr.net/lodash/4.17.4/lodash.min.js"></script>