SOURCE

function shaowClone(obj) {
    let shaowObj = {}
    for (let i in obj) {
        shaowObj[i] = obj[i]
    }
    console.log('hahahha')
    return shaowObj
}

var obj1 = {
    a: {
        a1: { a2: 1 },
        a10: { a11: 123, a111: { a1111: 123123 } }
    },
    b: 123,
    c: "123"
}

const obj2 = shaowClone(obj1)
console.log(obj2)