JavaScript find() 方法搜索对象数组以查找元素，结果不可访问

如何解决JavaScript find() 方法搜索对象数组以查找元素，结果不可访问

 //array of objects
 const posts = [ {userId: 1,id: 1,title: "sunt",author: 
 "Tom"},{userId: 1,id: 2,title: "qui est esse",author: "Tom"},id: 3,title: "ea molestias",id: 4,title: "eum et est occaecati",author: 
 "Tom"}]

 //id of one of the object
 const ItemId = 2

 //trying to find the object that has id: 2 an then print other 
 key -values pairs from that prticular object

 let post= posts.find(item=> item.id===ItemId)
 console.log(post)
 //result: {userId: 1,author: 
 "Tom"}
 console.log(post.title)
 //result: undefined --- why can not access these properties?
 console.log(post.author)
 //result: undefined
 console.log (typeof post)
 //result:  "string" --- why string,its an object is it?

  

感谢任何见解，我不明白为什么不能通过我们访问对象中的属性的方式访问那些 find() 方法结果？我也尝试过使用这样的括号：post[author) 没有成功......非常感谢关于这个主题的任何事情

解决方法

你没有得到任何错误吗？因为当我复制你的代码并运行时，它有多个错误。

//array of objects
const posts = [ {userId: 1,id: 1,title: "sunt",author: "Tom"},{userId: 1,id: 2,title: "qui est esse",id: 3,title: "ea molestias",id: 4,title: "eum et est occaecati",author: 
"Tom"}];
let post= posts.find(item=> item.id===2)
console.log(post)
console.log(post.title)
console.log(post.author)
console.log (typeof post)

试试这个代码。它正在返回一切正确

,

您的代码似乎有几个语法错误：

首先你忘记在数组中的一个元素后面放一个逗号。每个元素应该用逗号分隔{userId: 1,

Javascript 中的局部变量可以使用 = 符号设置一个值。在您的代码中，您使用了 const ItemId: 2。使用 : 声明变量只应在对象内部声明时使用，而不能在声明局部变量或常量时使用。

这是修复了语法错误的完整代码：

 //array of objects
 const posts = [ {userId: 1,author: 
 "Tom"},author: 
 "Tom"}];

 //id of one of the object
 const ItemId = 2;

 //trying to find the object that has id: 2 an then print other  key -values pairs from that prticular object

 let post= posts.find(item=> item.id===ItemId)
 console.log(post)
 //result: {userId: 1,author: "Tom"}
 console.log(post.title)
 //result: undefined --- why can not access these properties?
 console.log(post.author)
 //result: undefined
 console.log (typeof post)
 //result:  "string" --- why string,its an object is it?