//解构 可以从数组或对象中提取值并赋给变量
    //--- 数组解构
    let [x, y] = [1, 2]
    console.log("x:", x, "y:", y)

    let [, , c] = [10, 20, 30]
    console.log("c:", c)

    //扩展运算符
    let [A, ...B] = [1, 2, 3, 4, 5, 6]
    console.log("A:", A, "B:", B)

    let [x2, y2 = 200] = [100] //默认值
    console.log("x2:", x2, "y2:", y2)

    //两数交换
    let x3 = 10
    let y3 = 20; //不加分号会报错
    [x3, y3] = [y3, x3]
    console.log("x3:", x3, "y3:", y3)

    //--- 对象解构
    let person = {
        name: '邓瑞',
        gender: '男',
        web: 'dengruicode.com'
    }

    let { name } = person
    console.log("name:", name)

    //重命名
    let { name: userName, gender, web } = person
    console.log("userName:", userName, "gender:", gender, "web:", web)

    //默认值
    let { address = "安徽" } = person
    console.log("address:", address)