如何将keys数组与二维body数组映射转换为对象数组

JavaScript 实现 #

• 方法1：使用map + Object.fromEntries（ES2019+支持）

const keys = ['key0', 'key1', 'key2', 'key3'];
const body = [['jake', 24, 3, true], ['susan', 21, 0, true]];

const result = body.map(row => 
  Object.fromEntries(keys.map((key, idx) => [key, row[idx]]))
);

逻辑说明：遍历body的每一行数据，将keys数组的元素和当前行的元素按索引一一配对成键值对数组，最终转换为对象。

• 方法2：兼容性更强的reduce写法

const result = body.map(row => 
  keys.reduce((acc, key, idx) => {
    acc[key] = row[idx];
    return acc;
  }, {})
);

Python 实现 #

直接用内置的zip方法配对键值，搭配列表推导式生成结果：

keys = ['key0', 'key1', 'key2', 'key3']
body = [['jake', 24, 3, True], ['susan', 21, 0, True]]

result = [dict(zip(keys, row)) for row in body]

内容的提问来源于stack exchange，提问作者sam