javascript - 使用默认解构值javascript的对象解构

Question

我正在寻找一种简洁高效的方法来实现以下目标:

data中是否存在属性，如果存在于overriders中则覆盖它

fn(data = {}, overriders = {}) {

  data = {property: 2};

  let { property = data.property } = overriders;
  console.log(property); // = 2
}

可以正常使用

有没有更好的方法？我希望是这样的:

fn(data = {}, overriders = {}) {

  data = {property: 2};
  overriders = {property: 9}

  let { property } = data || overriders;
  console.log(property); // = 9
}

(我知道它类似于 fallback 但我一直在寻找语法上接近它的东西)

Answer 1

function fn(data = {property: 2}, overriders = {property: 9}) {
  let { property } = {...data, ...overriders};
  console.log(property); // = 9
}

fn();