Node.JS: Request a Key-Value from JSON Object

Question

API_URL show something like this:

{
    "posts": [{
        "id": "987f2bhfzu3r3f43fg",
        "uuid": "g3g4g-4g34gd7f-40ae-96g43g82-65g34g43ccec94a566",
        "title": "This is my title",
        "tag": "thistag"
    }]
}

const request = require('request');


request('API_URL', { json: true }, (err, res, body) => {
  if (err) { return console.log(err); }
  console.log(body.posts);

});

Returns me

[{
    "id": "987f2bhfzu3r3f43fg",
    "uuid": "g3g4g-4g34gd7f-40ae-96g43g82-65g34g43ccec94a566",
    "title": "This is my title",
    "tag": "thistag"
}]

If I try console.log(body.posts.title); in my code it returns

undefined

Who do I get the keyvalue of title?

Mureinik · Accepted Answer · 2020-02-01 19:11:51Z

3

Note the square brackets ([]) - you have got an array with a single element. You first need to subscript that element, and only then access the field:

console.log(body.posts[0].title)
// Here --------------^

answered Feb 1, 2020 at 19:11

Mureinik

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Comments

mickl · Accepted Answer · 2020-02-01 19:12:12Z

2

body.posts is an array so you need to iterate the elements to print the title like:

for(let post of body.posts){
    console.log(post.title);
}

answered Feb 1, 2020 at 19:12

mickl

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Comments

lax9999 · Accepted Answer · 2020-02-01 19:20:19Z

2

You should use body.posts[0].title. In json the square brackets indicate a list. I hope it helps.

answered Feb 1, 2020 at 19:20

lax9999

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