Question

var person = {
       "name" : "Bronn",
       "description" : {
          "occupation" : "guardian knight",
          "age" : 52
       }
    }

for(var key in person){
   if(person[key] == /*contains json object */){
      //do something
   }
}

我想循环此人并检查其值是否包含单个数据或其他对象。

Answer 1

您可以使用Object.keys()，typeof()获取重新获得的结果并使用Array's迭代器。

<强>演示

var person = {"name": "Bronn","description": {"occupation": "guardian knight","age": 52}},
  keys =Object.keys(person);

//ES5
keys.forEach(function(key) {
  if (typeof(person[key]) == 'object') {
    console.log('Find using ES5',person[key]);
  }
});

//ES6 syntax
keys.forEach(key => {
  if (typeof(person[key]) == 'object') {
    console.log('Find using ES6',person[key]);
  }
});

Answer 2

它只是普通的对象而不是JSON.And filter object values和typeof() == object。已显示对象的已过滤数组的长度是否存在

var person = {
       "name" : "Bronn",
       "description" : {
          "occupation" : "guardian knight",
          "age" : 52
       }
    }
console.log('its contains any object=',Object.values(person).filter(a=> typeof(a) == 'object').length > 0)

Answer 3

只需检查下面的构造函数

for(var key in person){
   if(person[key].constructor == Object){
     //do something
  }
}

Answer 4

您可以使用typeof查看object，但您还需要检查该值，因为null是一个对象和一个值。

var person = { foo: null, name: "Bronn", description: { occupation: "guardian knight", age: 52 } },
    keysOfObjects = Object.keys(person).filter(key => typeof person[key] == 'object'),
    wantedKeys = Object.keys(person).filter(key => person[key] && typeof person[key] == 'object');

console.log(keysOfObjects);
console.log(wantedKeys);

.as-console-wrapper { max-height: 100% !important; top: 0; }

如何检查对象是否包含另一个对象？

4 个答案: