javascript - 根据另一个数组过滤一个数组

Question

我有 2 个这样的数组......

var heroes = [{
    name: "Batman",
    franchise: "DC"
  },
  {
    name: "Ironman",
    franchise: "Marvel"
  },
  {
    name: "Thor",
    franchise: "Marvel"
  },
  {
    name: "Superman",
    franchise: "DC"
  }
];

var stars = ["Thor", "Superman"];

var marvelHeroes = heroes.filter(function(hero) {
  return stars.indexOf(hero.name) >= 0;
});

console.log(marvelHeroes);

此代码返回“未定义”。所以基本上我试图根据另一个数组中的值过滤一个数组。

有人可以告诉我我做错了什么吗？谢谢

我预期的输出是一个对象数组，如下所示......

[
{name: "Thor", franchise: "Marvel"},
{name: "Superman", franchise: "DC"}
];

我看过类似的问题here ，但该解决方案对我不起作用 ...

Answer 1

应该只是 return stars.indexOf(item.name) !== -1 ;

演示

var heroes = [
    {name: "Batman", franchise: "DC"},
    {name: "Ironman", franchise: "Marvel"},
    {name: "Thor", franchise: "Marvel"},
    {name: "Superman", franchise: "DC"}
];

var stars = ["Thor","Superman"];

var filtered = heroes.filter(function(item) {
        return stars .indexOf(item.name) !== -1 ;
});

console.log(filtered);