键未知时如何获取js对象中的属性值 [英] How to get property value in js object when key is unknown

问题描述

我有一个对象数组:

a = [
     {81.25: {p:81.25}}, 
     {81.26: {p:81.26}}
    ]

我想遍历数组并获取每个元素中 p 的值:

I want to loop through array ang get value of p in each element:

for (var key in a) {
   console.log(a[key]); // outputs {81.25: Object}
   //How do i get p value out of the current element?
}

抱歉误导，我不想再次循环 - 认为可能是获取当前对象中的第一个对象并获得它的属性 p 的某种方法.

sorry for misleading, I wodnt want to loop againg - thought may be some way to get first object inside current one and to get it's property p.

推荐答案

我找到了答案.

for (var key in a) {
 console.log(a[key][Object.keys(a[key])[0]].p); // 81.25
}

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