Question

我只是想从json数组中读取json对象。但是在尝试读取整个数组时，我得到了[Object]来代替嵌套的Json对象。

我的JSON看起来像这样：

var json = {
  "root_id": [
    {
      "child-id1": {
        "name": "name1",
        "created_by": null,
        "created_at": "2018-05-30T19:34:38.657Z",
        "configs": {
          "generic": {
            "size": 1000,
            "timeout": 60,
            "field1_key": "field1_value"
          },
          "specific": {
            "key1": "xxx-xxx",
            "field1_key": "field1_value"
          }
        }
      }
    },
    {
      "child-id2": {
        "name": "name2",
        "created_by": null,
        "created_at": "2018-05-30T19:34:38.657Z",
        "configs": {
          "generic": {
            "size": 10,
            "timeout": 60,
            "field1_key": "field1_value"
          },
          "specific": {
            "key1": "xxx-xxx",
            "field1_key": "field1_value"
          }
        }
      }
    }
  ]
}

我希望我的函数返回“ root_id”对象的Json数组。因此，我只是尝试了以下简单代码来读取数组：

var val = json['root_id'];
console.log(val);

但是它返回此：

[ { 'child-id1': 
     { name: 'name1',
       created_by: null,
       created_at: '2018-05-30T19:34:38.657Z',
       configs: [Object] } },
  { 'child-id2': 
     { name: 'name2',
       created_by: null,
       created_at: '2018-05-30T19:34:38.657Z',
       configs: [Object] } } ]

如何确保嵌套对象返回原样，而不只是 [object] ？

Answer 1

如果在服务器中使用此console.log，则应使用util.inspect()，https://nodejs.org/api/util.html。

检查以下问题：How can I get the full object in Node.js's console.log(), rather than '[Object]'?

如果在浏览器中使用，它应该显示所有内容。

Answer 2

尝试

var json = {
  "root_id": [
    {
      "child-id1": {
        "name": "name1",
        "created_by": null,
        "created_at": "2018-05-30T19:34:38.657Z",
        "configs": {
          "generic": {
            "size": 1000,
            "timeout": 60,
            "field1_key": "field1_value"
          },
          "specific": {
            "key1": "xxx-xxx",
            "field1_key": "field1_value"
          }
        }
      }
    },
    {
      "child-id2": {
        "name": "name2",
        "created_by": null,
        "created_at": "2018-05-30T19:34:38.657Z",
        "configs": {
          "generic": {
            "size": 10,
            "timeout": 60,
            "field1_key": "field1_value"
          },
          "specific": {
            "key1": "xxx-xxx",
            "field1_key": "field1_value"
          }
        }
      }
    }
  ]
}
 
var count = Object.keys(json['root_id']).length;
for (var i = 0; i < count; i++) {
    console.log(json['root_id'][i]);
}

嵌套的JSON对象在NodeJS中返回[Object]

2 个答案: