通过过滤现有JSON来创建JSON

result = data.children
    .filter(o => o.name === 'Age')
    .map(o => Object.assign(
        {},
        o,
        {
            children: o.children.filter(o => o.name === 'Male' || o.name === 'Female')
        }
    ));

console.log(result);

每个字符串只能找到一个实例 "Male" 和 "Female"