javascript - JS - 循环对象数组并输出属性

Question

如何遍历这个对象数组并输出对象的键

var people = [
  { name: "jon", age: 42 },
  { name: "mary", age: 32 }
]

所以上面会返回：

// "姓名" "年龄", "姓名" "年龄"

标签： javascript

Answer 1

您可以遍历数组并使用 for ... in 循环输出键。

var people = [
  { name: "jon", age: 42 },
  { name: "mary", age: 32 }
]

people.forEach(function(element) {
  for (let key in element) {
    console.log(key);
  }
});