javascript-grade/Objectpractice2.js at master · cocoa-salon/javascript-grade · GitHub

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let arr = [{
    "id": 1,
    name: "Yong",
    "phone": "010-2786-9902",
    "type": "sk",
    "childnode": [{
      "id": 11,
      "name": "echo",
      "phone": "010-3923-1333",
      "type": "kt",
      "childnode": [{
        "id": 115,
        name: "hary",
        "phone": "010-2786-9302",
        "type": "sk",
        "childnode": [{
          "id": 1159,
          "name": "pobi",
          "phone": "010-9302-0009",
          "type": "kt",
          "childnode": [{
            "id": 11592,
            "name": "cherry",
            "phone": "010-1223-9932",
            "type": "lg",
            "childnode": []
          },
          {
            "id": 11595,
            name: "solvin",
            "phone": "010-534-7843",
            "type": "sk",
            "childnode": []
          }
          ]
        }]
      },
      {
        "id": 116,
        "name": "kim",
        "phone": "010-3796-1102",
        "type": "kt",
        "childnode": [{
          "id": 1168,
          name: "hani",
          "phone": "010-1223-6713",
          "type": "sk",
          "childnode": [{
            "id": 11689,
            "name": "ho",
            "phone": "010-4434-4534",
            "type": "kt",
            "childnode": [{
              "id": 116890,
              "name": "wonsuk",
              "phone": "010-3434-1302",
              "type": "kt",
              "childnode": []
            },
            {
              "id": 1168901,
              name: "chulsu",
              "phone": "010-3100-9841",
              "type": "sk",
              "childnode": []
            }
            ]
          }]
        }]
      },
      {
        "id": 117,
        "name": "hong",
        "phone": "010-2786-9902",
        "type": "lg",
        "childnode": []
      }
      ]
    }]
  }];

  function getResult(arr){
    if(arr.length === 0) return [];
    let result = [];
    for(let i = 0; i < arr.length; i++){
      if(arr[i]["type"] === "sk"){
        result.push(arr[i]["name"]);
      }
      result = result.concat(getResult(arr[i]["childnode"]));
    }
    return result;
  }
  console.log(getResult(arr));

  //["Yong", "hary", "solvin", "hani", "chulsu"]