Accessing Object inside Array

Question

I'm trying to access values inside Firebase array > object.

When I try to access values inside v-for, it works well. But I cannot do this: postDetail.author. It returns undefined. What's the solution?

Please post CODE instead of PICTURES of code. You want postDetail[0].author — mplungjan
– mplungjan, Commented Jun 12, 2018 at 16:59
postDetail is an array and you want to access first item of it..so you need to do postDetail[0].author — belicam
– belicam, Commented Jun 12, 2018 at 17:01
This question was caused by a problem that can no longer be reproduced or a simple typographical error. While similar questions may be on-topic here, this one was resolved in a manner unlikely to help future readers. This can often be avoided by identifying and closely inspecting the shortest program necessary to reproduce the problem before posting. — mplungjan
– mplungjan, Commented Jun 12, 2018 at 17:02

amrender singh · Accepted Answer · 2018-06-12 17:03:11Z

3

Since postDetail is an array of object to access properties inside its objects, you need do something like postDetail[Index].prop

var postDetail =[{"author" : "abc", "meta" : "xyz"}];
console.log(postDetail[0].author);

answered Jun 12, 2018 at 17:03

amrender singh

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1 Comment

Nicolas Pennec Over a year ago

and just for fun, with destructuring const [{author},] = [{"author" : "abc", "meta" : "xyz"}]; console.log(author); :-)

Rogerio Soares Ferreira · Accepted Answer · 2018-06-12 17:05:58Z

1

If you want get only author try it:

var postDetails = [{
  author: "John",
  category: "Tech"
}];

var inner = postDetails.map(function(e) {
  return e.autor;
});

console.log(inner);

answered Jun 12, 2018 at 17:05

Rogerio Soares Ferreira

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Comments

Ankit Keshari · Accepted Answer · 2019-02-05 06:12:04Z

0

// Array of object
var persons = [
  {
    name: "shubham",
    age: 22,
    comments: ["Good", "Awesome"]
  },
  {
    name: "Ankit",
    age: 24,
    comments: ["Fine", "Decent"]
  },
  {
    name: "Arvind",
    age: 26,
    comments: ["Awesome", "Handsome"]
  },
  {
    name: "Ashwani",
    age: 28,
    comments: ["Very Good", "Lovely"]
  }
];

var data = persons.map(person => {
  console.log(person.name);
  console.log(person.age);
  person.comments.map((comment, index) => console.log(index + " " + comment));
});

answered Feb 5, 2019 at 6:12

Ankit Keshari

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