javascript - 按对象键值搜索多级 JavaScript 数组

Question

我有这个对象

  var myObj =   {
    "sections": [{
        "id": "s1",
        "name": "my section no.1",
        "sheets": [{
            "id": "sheet1",
            "questions": [{
                "id": "q1",
                "name": "my q",
                "options": [{
                    "id": "o1",
                    "order_no": 1,
                    "name": "option 1"
                }, {
                    "id": "o2",
                    "name": "option 2"
                }]
            }]
        }]
    }]
};

我想要函数通过 id 搜索这个数组所以searchById("o1") 应该返回

{"id": "o1","order_no": 1,"name": "option 1"}

并且 searchById("q1") 应该返回

{
    "id": "q1",
    "name": "my q",
    "options": [{
        "id": "o1",
        "order_no": 1,
        "name": "option 1"
    }, {
        "id": "o2",
        "name": "option 2"
    }]
}

请帮助我

Answer 1

你拥有的是对象，你可以使用for...in循环创建递归函数来返回结果。

var obj = {
  "sections": [{
    "id": "s1",
    "name": "my section no.1",
    "sheets": [{
      "id": "sheet1",
      "questions": [{
        "id": "q1",
        "name": "my q",
        "options": [{
          "id": "o1",
          "order_no": 1,
          "name": "option 1"
        }, {
          "id": "o2",
          "name": "option 2"
        }]
      }]
    }]
  }]
}

function findObj(data, id) {
  for (var i in data) {
    if (i == 'id' && data[i] == id) return data
    if (typeof data[i] == 'object' && findObj(data[i], id)) return findObj(data[i], id)
  }
}

console.log(findObj(obj, 'o1'))
console.log(findObj(obj, 'q1'))