javascript - 对象属性的展开运算符 (...) 的等价物是什么？

Question

我正在构建一个笔记应用程序，需要一种方法将用户花费的时间传递给存储它的构造函数。这是目的地:

var NoteTime = function(minute, hour, day, month, year) {
    var d = new Date();
    this.millisec = d.getMilliseconds();
    this.minute = minute || d.getMinutes();
    this.hour = hour || d.getHours();
    this.day = day || d.getDay();
    this.month = month || d.getMonth();
    this.year = year || d.getUTCFullYear();
}

var gatheredTime = {
    minute: null,
    hour: null,
    day: null,
    month: null,
    year: null
}

我知道我可以像这样度过gatheredTime

var storeResult = new NoteTime(gatheredTime[prop1], gatheredTime[prop2]....etc)

但我想使用更少的代码并像传递数组一样传递值:

var storeResult = new NoteTime(...gatheredTime)

是的，我可以将它转换为数组，但我想知道是否有更好的方法。

Answer 1

使用Destructuring assignment

var NoteTime = function (gatheredTime) {
    let {minute, hour, day, month, year} = gatheredTime;

var NoteTime = function(gatheredTime) {
  let {
    minute, hour, day, month, year
  } = gatheredTime;
  console.log(minute, hour, day, month, year);
  // code here
};

var gatheredTime = {
  minute: 10,
  hour: 5,
  day: 9,
  month: 8,
  year: 2016
};

NoteTime(gatheredTime);

---

或者，参数可以在arguments中直接销毁。

var NoteTime = function ({minute, hour, day, month, year}) {