javascript - 找到键并创建新对象

Question

我有这个对象数组:

[{
    "f_name":"nand",
    "lastName":"bhatt",
    "gender":"",
    "email":"chuchubhatt@webuters.com",
    "mobileNo":"0043 664 321 54 76",
    "company":"IBM Bhimtal"
}, {
    "f_name":"Pooran",
    "lastName":"Pradhan",
    "gender":"male",
    "email":"pp@wt.com",
    "mobileNo":"13123123123",
    "company":"Google"
}, {
    "f_name":"Krishna",
    "lastName":"Bhatt",
    "gender":"Male",
    "email":"krishna@wt.com", "mobileNo":"983232324",
    "company":"IBM"
}];

我想要一个与此类似的新对象:

[
  {
  field_name:f_name, sample: ['nand','Pooran','Krishna'],
  field_name:lastName, sample: ['bhatt','Pradhan','Bhatt'],
  field_name:gender, sample: ['','male','Male'],
  field_name:email, sample:  ['chuchubhatt@webuters.com','pp@wt.com','krishna@wt.com'],
  field_name:mobileNo, sample: ['0043 664 321 54 76','13123123123','983232324'],
 }]

知道我们应该如何在 lodash 中做到这一点吗？

Answer 1

这是我的方法:

_(collection)
    .map(_.keys)
    .flatten()
    .uniq()
    .map(function(item) {
        return {
            field_name: item,
            sample: _.pluck(collection, item)
        };
    }).value();

前三个电话 map() , flatten() ，和uniq() ，为您提供一组可供使用的键。下一次调用 map() 会生成输出集合。由于您要映射键，因此 field_name 属性只是 item 参数。 sample 属性使用 pluck()从原始集合中采样所有字段值。