角度2を使用してカテゴリに基づいて特定の詳細を取得する方法

Question

私は以下のように私のjsonオブジェクトはcity_id = 50のcitydetailsを取得する方法ですか？あなたのJSONに上記と仮定すると、

{ 
"status": 0, 
"message": "success", 
"citydetails": [ 
    { 
     "city_id": "50", 
     "city_name": "Pune" 

    }, 
    { 
     "city_id": "53", 
     "city_name": "Mumbai" 

    }, 
    { 
     "city_id": "50", 
     "city_name": "Pune" 
    }, 
    { 
     "city_id": "52", 
     "city_name": "Banglore" 

    }, 
    { 
     "city_id": "50", 
     "city_name": "Pune" 

    } 
] 
} 

Answer 1

let json = { 
"status":0, 
"message":"success", 
"citydetails":[ 
    { 
    "city_id":"50", 
    "city_name":"Pune" 
    }, 
    { 
    "city_id":"53", 
    "city_name":"Mumbai" 
    }, 
    { 
    "city_id":"50", 
    "city_name":"Pune" 
    }, 
    { 
    "city_id":"52", 
    "city_name":"Banglore" 

    }, 
    { 
    "city_id":"50", 
    "city_name":"Pune" 
    }] 
}; 

、コードの下に都市のオブジェクトをフィルタリングします。

let filteredCities = json.citydetails.filter(data => { 
    return data.city_id === "50"; 
}); 

filteredCitiesは、Array