SOURCE

     var t = {
            money: 1000000000,
            house: "新疆海景房",
            car: {
                brand: "宝马",
                color: "pink"
            }
        };
        function deepcoppy(obj) {
            var newObj = {};
            for (let k in obj) {
                newObj[k] = typeof obj[k] === 'object' ? deepcoppy(obj[k]) : obj[k]
            }
            return (newObj);
        }
        let t2 = deepcoppy(t)
        console.log(t2);