我有这样一个场景,需要从对象数组中只获取键。对象结构如下所示。我也尝试了一种方法,但似乎不起作用。有人能帮我吗?
var arr = [
{ firstName: "aaaaa", status: 0, visits: 155 },
{ firstName: "aabFaa", status: 0, visits: 155 },
{ firstName: "adaAAaaa", status: 10, visits: 1785 },
{ firstName: "aAaaaa", status: 50, visits: 175 },
{ firstName: "aaaaa", status: 670, visits: 155 },
]
console.log([...new Set(arr.map(item => Object.keys(item)))]); // This does not work
['firstName','status','visits']
。