ES6+新特性

(1)解構賦值
解構賦值允許你從陣列或物件中提取資料，並賦值給變數

陣列解構

let [first, second, third] = ["red", "green", "blue"];

console.log(first);   // 輸出: red
console.log(second);  // 輸出: green
console.log(third);   // 輸出: blue

物件解構

let person = {name: "John", age: 30};

let {name, age} = person;

console.log(name);  // 輸出: John
console.log(age);   // 輸出: 30

(2)模板字串
模板字串使用反引號來創建，並且可以在字串中嵌入變數和表達式

let name = "Alice";
let greeting = `Hello, ${name}!`;

console.log(greeting);  // 輸出: Hello, Alice!

(3)展開運算符
展開運算符（...）允許你將陣列或物件展開
展開陣列

let arr1 = [1, 2, 3];
let arr2 = [...arr1, 4, 5, 6];

console.log(arr2);  // 輸出: [1, 2, 3, 4, 5, 6]

展開物件

let obj1 = {a: 1, b: 2};
let obj2 = {...obj1, c: 3};

console.log(obj2);  // 輸出: {a: 1, b: 2, c: 3}