如何从对象中获取zipCode？

Question

我有这个：

[Object]
  0:Object
    zipCode:"1232"

现在我想要的是从我尝试过的对象中获取zipCode：

Object[0].zipCode，但我收到消息说0是未定义的

更新：

 this.restService.getByParam("findAddress", customerId)
                    .subscribe(results =>   {
                    this.address = results.payload;
                });

然后我得到了那个物体，现在我想做这样的事情：

console.log(this.address[0].zipCode

Answer 1

​

var obj = { 0 : {'zipCode':"1232"} }

for(var key in obj) {
  console.log(obj[key].zipCode);
}

​

Answer 2

给你：

var foo = { 0 : {'zipCode':"1232"} }

for(var key in foo) {
var value = foo[key];
}

console.log(value); // this give you 'zipCode':"1232"
console.log(value['zipCode']); // this give you "1232"

https://jsfiddle.net/emilvr/9d58ebuy/