ES6学习笔记 - 2.解构赋值

{
    // 数组
    let a,b,c;
    [a,b,c]=[1,2,3];
    console.info(a,b,c)
}

{
    let [a,...b]=[1,2,3,4,5,6];
    console.info(a,b);
}

{
    let a,b,c;
    [a,b,c]=[1,2];
    console.info(a,b,c);
    [a,b,c=3]=[4,5];
    console.info(a,b,c);
}

{
    let a,b;
    ({a,b}={a:4,b:5})
    console.log(a,b);
}

{
    let o={p:42,q:true};
    let {p,q}=o;
    console.log(p,q);
}

{
    let a=1;
    let b=2;
    console.info(a,b);
    [a,b]=[b,a];
    console.info(a,b);
}

{
    function test()
    {
        return [1,2,3];
    }
    let [a,,c]=test();
    console.info(a,c)
    //输出1 3
}

{
    // 前端返回的数据
    let returnJson = {
        title:‘abc‘,
        test:[{
            title:‘test‘,
            desc:‘description‘
        }]
    };
    
    let {title:esTitle,test:[{title:cnTitle}]}=returnJson;
    console.info(esTitle,cnTitle);
}