如何将对象的每个属性值转换为数组形式？

需求说明 #

初始对象：

{
    "tin": "TIN is required",
    "bic": "BIC is required",
}

需要将所有属性值转换为数组形式，得到目标对象：

{
    "tin": ["TIN is required"],
    "bic": ["BIC is required"],
}

实现方案 #

核心逻辑就是遍历原对象的每一组键值对，把单个值包装成数组，再对应到原键名上生成新对象。下面是几种常用语言的具体实现：

JavaScript 实现

方法一：使用for...of循环遍历键值对

const originalObj = {
    "tin": "TIN is required",
    "bic": "BIC is required",
};

const transformedObj = {};
for (const [key, value] of Object.entries(originalObj)) {
    transformedObj[key] = [value];
}

方法二：用reduce函数简洁处理

const originalObj = {
    "tin": "TIN is required",
    "bic": "BIC is required",
};

const transformedObj = Object.entries(originalObj).reduce((acc, [key, val]) => {
    acc[key] = [val];
    return acc;
}, {});

Python 实现

用字典推导式一行搞定

original_obj = {
    "tin": "TIN is required",
    "bic": "BIC is required",
}

transformed_obj = {key: [value] for key, value in original_obj.items()}

内容的提问来源于stack exchange，提问作者Alex