卸下基于按键及放数组对象;在另一个对象的属性？ [英] Remove objects from array based on keys & properties in another object?

问题描述

我有以下对象，其属性项设置为用户名和属性值被设置为它们出现的次数的计数，和包含对象的具有属性的列表的阵列用户ID 和用户名：

  peopleWhoAppear = {爱德华：5，山猫：2，迈克尔：9，安迪：6}siteUsers = [
  {用户名：1​​842年，用户名：萨姆}，
  {用户名：2943，用户名：夏洛特}，
  {用户名：1​​842年，用户名：理查德}，
  {用户名：2916，用户名：伊万}，
  {用户名：2073，用户名：保罗}，
  {用户名：1​​842年，用户名：西奥}
  ...
]
 

我想从 siteUsers 数组，其中用户名在属性键匹配删除所有对象的 peopleWhoAppear 对象如果属性值一定数量的匹配（也可能是5或8），其余结果返回给另一个数组。我一直停留在这6小时超过2天了，我还没有取得任何进展。

我试过不同的排列 .filter 和 .splice ，但没有成功的循环。例如：

 为（以peopleWhoAppear VAR用户名）{
   如果（peopleWhoAppear [用户名] ===计数）{
                siteUsers.filter（功能（人）{
                    的console.log（人）;
                    返回person.UserName ==验证！;
                }））;
     }
 }
 

我怎样才能做到这一点？我没有访问除了jQuery的任何图书馆所以像下划线是没有用在这里。

解决方案

  

我试过变化 .filter 的排列和循环和 .splice ，但没有成功。

您只需要过滤器：

 返回siteUsers.filter（函数（OBJ）{
    VAR用户= obj.UserName;
    （;＆安培;在peopleWhoAppear和放大器用户peopleWhoAppear [用户] ==计数）回来吧！;
}）;
 

这将让你一个新的数组，与所有没有出现在 peoplWhoAppear 或在那里有错误计数的用户。

I have the following object, where the property key is set to a username and the property value is set to a count of the number of times they appear, and an array containing a list of objects with properties of UserId, and UserName:

peopleWhoAppear = { "Edward": 5, "Charlotte": 2, "Michael": 9, "Andy": 6 }

siteUsers = [ 
  { UserId: 1842, UserName: "Sam" }, 
  { UserId: 2943, UserName: "Charlotte" }, 
  { UserId: 1842, UserName: "Richard" },
  { UserId: 2916, UserName: "Ivan" },
  { UserId: 2073, UserName: "Paul" },
  { UserId: 1842, UserName: "Theo" }
  ...
]

I would like to remove all objects from the siteUsers array where the UserName matches a property key in the peopleWhoAppear object if the property value matches a certain number (it could be 5 or 8) and return the remaining results to another array. I've been stuck on this for 6 hours over 2 days now and I've not made any progress.

I've tried varies permutations and loops of .filter and .splice, but with no success. For example:

 for (var UserName in peopleWhoAppear) {
   if (peopleWhoAppear[UserName ] === count) {
                siteUsers.filter(function (person) {
                    console.log(person);
                    return person.UserName !== verifier;
                }));
     }
 }

How can I accomplish this? I don't have access to any libraries apart from jQuery so things like Underscore are not useful here.

解决方案

I've tried varies permutations and loops of .filter and .splice, but with no success.

You will only need filter:

return siteUsers.filter(function(obj) {
    var user = obj.UserName;
    return !(user in peopleWhoAppear && peopleWhoAppear[user] == count);
});

This will get you a new array, with all the users that did not appear in peoplWhoAppear or had the wrong count in there.

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