如何将嵌套 JSON 对象的所有键值移动到 Node.js 中的父级

Question

我有一个 JSON 对象，在第一级有 3 个嵌套对象。

data{"key1":"value1", "key2":"value2",
    "section1":"{"key1_1":"value1_1", "key1_2":"value1_2"}",
    "section2":"{"key2_1":"value2_1", "key2_2":"value2_2", "key2_3":"value2_3"}",
    "section3":"{"key3_1":"value3_1"}"
}

现在，使用 NODE.JS，我需要将所有键值从嵌套移动到具有根级别的所有键值的父对象，如下所示：

data{
"key1":"value1", "key2":"value2","key1_1":"value1_1", "key1_2":"value1_2", "key2_1":"value2_1", "key2_2":"value2_2", "key2_3":"value2_3", "key3_1":"value3_1"
}

Answer 1

使用适当的对象，您可以迭代键，如果找到对象，则使用找到的对象的内容再次调用该函数。

function flat(source, target) {
    Object.keys(source).forEach(function (k) {
        if (source[k]!== null && typeof source[k] === 'object') {
            flat(source[k], target);
            return;
        }
        target[k] = source[k];
    });
}

var data = { "key1": "value1", "key2": "value2", "section1": { "key1_1": "value1_1", "key1_2": "value1_2" }, "section2": { "key2_1": "value2_1", "key2_2": "value2_2", "key2_3": "value2_3" }, "section3": { "key3_1": "value3_1" } },
    flatObject = {};

flat(data, flatObject);
console.log(flatObject);

以JSON字符串作为值的版本和try ... catch用于测试该值是否为 JSON的语句。

function flat(source, target) {
    Object.keys(source).forEach(function (k) {
        var o;
        try {
            o = JSON.parse(source[k]);
            if (o && typeof o === 'object') {
                flat(o, target);
            } else {
                target[k] = o;
            }
        } catch (e) {
            target[k] = source[k];
        }
    });
}

var data = { "key1": "value1", "key2": "value2", "section1": "{\"key1_1\":\"value1_1\", \"key1_2\":\"value1_2\"}", "section2": "{\"key2_1\":\"value2_1\", \"key2_2\":\"value2_2\", \"key2_3\":\"value2_3\"}", "section3": "{\"key3_1\":\"value3_1\"}" },
    flatObject = {};

flat(data, flatObject);
console.log(flatObject);