从JavaScript对象获取numeric属性的值

Question

我有一个JavaScript对象，如下所示。

{
    "28903218": {
        "type": "group", 
        "prompt": "Cool, thanks! Now tell us about your child's day:", 
        "description": ""
    }, 
    "37742463": {
        "type": "choice", 
        "prompt": "How does {{answer_28903220}} react in an unwelcome situation?", 
        "description": "(Such as not wanting to be in the car seat, when you're not in the room at bedtime, etc.)"
    }, 
    "30035493": {
        "type": "choice", 
        "prompt": "Friday:", 
        "description": ""
    }, 
}

我有一个问题需要阅读。如何获得28903218属性的值？

 surveyData.getQuestions().subscribe(
      result => {
        //here I need to get the "28903218" object's value 
      },
      err => { },
      () => { }
    );

Answer 1

假设您知道28903218：

var value = result["28903218"];

如果您不了解它，那么您可以遍历这些属性，直到找到所需的属性：

for (var prop in result) {
    var value = result[prop];
}