JaScript 中的变量解构

, , fourth] = days;

console.log(first, "First");

console.log(second, "Second");

console.log(fourth, "Fourth");

//Returns ；还有>

Monday First

Tuesday Second

Thursday Fourth

我们还可以用于 rest codice_将运算符中都剩余的值收集到一个参数中都。

var days = [

"Monday",

"Tuesday",

"Wednesday",

"Thursday",

"Friday",

"Saturday",

"Sunday"

];

const [first, ...remainingDays] = days;

console.log(first, "First");

console.log(remainingDays, "Remaining");

//Returns ；还有>

Monday First

(6) ['Tuesday', 'Wednesday', 'Thursday', 'Friday', 'Saturday', 'Sunday']0: "Tuesday"1: "Wednesday"2: "Thursday"3: "Friday"4: "Saturday"5: "Sunday"length: 6[[Prototype]]: Array(0) 'Remaining'

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