What does object object object mean?-CodePudding

I'm trying to make a journal but can't get it to work. I'm trying to make a for loop that posts the posts that I compose, in an array on the home page. I get connection between the app file and the ejs file because the inputs shows up when I log it in the terminal. I just can't get it to show up on the home page. I just want the title of the input to show up, but I keep getting [object Object],[object Object],[object Object] and I can't understand why?

<h1>Home</h1>
<P> <%= startingContent %> </P>
<%- console.log(posts);-%>
<ul>
    
<% posts.forEach(function(post, i) { %>
 <li>Posts <%= posts %></li>
<% }); %> 
</ul>

const posts = [];

app.get("/", (req, res) => {
  res.render("home",{ startingContent: homeStartingContent , posts:posts});
  posts: [
{posts: posts},
{posts: posts}
  ]
  //console.log(posts);
});

CodePudding user response：

I guess you are trying to output an Object as a string.

In order to print an object out you first need to parse it using JSON.parse(myObject), then you can print it out and it's gonna be readable instead of just [object Object].

If you wanna just access a property you can use myObject.myProperty or myObject["myProperty"]

CodePudding user response：

    let x ={
        first:1,
        second:{
           third:3,
           fourth:[{
               fifth:4
           }],
           sixth:{
               seventh:5
           }
       },
        eighth:[1,2],
        ninth:[{
           tenth:10
       }]
}

console.log(x) // { first: 1, second: { third: 3, fourth: [ [Object] ],sixth: { seventh: 5 } }, eighth: [ 1, 2 ],ninth: [ { tenth: 10 } ] }

parsing in javascript works only till 2 level. it converts array of objects to [object, object].

    let x ={
        first:1,
        second:{
            third:3,
            fourth:[{
                fifth:4
            }],
            sixth:{
                seventh:5
            }
        },
        eighth:[1,2],
        ninth:[{
            tenth:10
        }]
    }

    console.log(JSON.stringify(x)) // {"first":1,"second":{"third":3,"fourth":[{"fifth":4}],"fi":[7],"sixth":{"seventh":5}},"eighth":[1,2],"ninth":[{"tenth":10}]}

try using JSON.stringify() to get the whole object

CodePudding user response：

[object Object] is a string version of an object instance. This value is returned by a JavaScript program if you try to print out an object without first formatting the object as a string.

This is the syntax for the [object Object] object: [object Object] JavaScript Example Take this example:

let objA = {
 name: "christina",
 degree: "music",
 instrument: "flute"
}