迭代javascript对象的最有效方法是什么？

Question

我需要在内存中迭代javascript大对象，以便生成嵌套的json数据并插入到db中。对象结构如下：

var obj = {
    "30": { "7": { "date1": { "key1": "value1", "key2": "value2"}}},
    "29": { "8": { "date2": { "key1": "value1"}}},  
    "28": { "6": { "date3": { "key1": "value1", "key2": "value2", "key3": "value3"}}}   
};

实际上我使用这个方法迭代对象以更改嵌套级别

Object.keys(obj).map((number1) => {
    const number1Obj = obj[number1];
    Object.keys(number1Obj).map((number2) => {
        const number2Obj = number1Obj[number2];
        Object.keys(number2Obj).map((date) => {
            const dateObj = number2Obj[date];
            console.log(number1);
            console.log(number2);
            console.log(date);
            Object.keys(dateObj).map((key) => {
                console.log(`           ${key}:${dateObj[key]}`);
            });
        });
     });
  });

是否有更有效的方法迭代对象及其属性？ running example

Answer 1

您可能会发现此答案相关，但不确定性能问题。

Iterate through Nested JavaScript Objects