javascript - 过滤包含文章列表作为对象的数组

Question

我有一个包含 7 个对象的数组，其中包含所有文章。我需要能够仅显示前 3 篇文章

const myArray = [
   {
      id: "article_1",
      type: "articles"
   },
{
      id: "article_2",
      type: "articles"
   },
{
      id: "article_3",
      type: "articles"
   },
{
      id: "article_4",
      type: "articles"
   },
{
      id: "article_5",
      type: "articles"
   },
{
      id: "article_6",
      type: "articles"
   },
{
      id: "article_7",
      type: "articles"
   }
]

const filteredArticles = myArray.filter(article => myArray.length > 3)

console.log(filteredArticles)

不幸的是，它返回一个空数组而不是包含文章的数组。

我知道解决方案可能是使用 if(myArray.length > 3) {//show only index 0, 1, 2, 3 } else {//blah blah}

但我正在尝试使用 js .filter ，它应该可以轻松隐藏超过 3 篇文章的数量。

Answer 1

尝试

myArray.filter((_,i) => i < 3)

const myArray = [
   {
      id: "article_1",
      type: "articles"
   },
{
      id: "article_2",
      type: "articles"
   },
{
      id: "article_3",
      type: "articles"
   },
{
      id: "article_4",
      type: "articles"
   },
{
      id: "article_5",
      type: "articles"
   },
{
      id: "article_6",
      type: "articles"
   },
{
      id: "article_7",
      type: "articles"
   }
]

const filteredArticles = myArray.filter((_,i) => i < 3);

console.log(filteredArticles);