Json to javascript dictionary

Question

I have JSON data in the following structure, and I'm trying to parse it in order to work with the data using javascript.

JSON Data

{
    "FirstItem": {
        "id": 1,
        "type": "foo",
        "colours": ["blue", "black", "green"],
        "reviews": {
            "positive": ["The best", "unbelievable", "Awesome"],
            "negative": ["Sh*t", "Awful", "Dire", "Terrible", "Appalling"],
            "neutral": ["OK", "Meh"]
        }
    },
    "SecondItem": {
        "id": 2,
        "type": "bar",
        "colours": ["red", "white", "yellow"],
        "reviews": {
            "positive": ["Great", "Amazing", "Fantastic", "Perfect", "Uplifting"],
            "negative": ["Terrible", "Shocking", "abysmal"],
            "neutral": ["OK", "Standard", "Vanilla"]
        }
    }
}

I am trying to parse this using JSON.parse(), however this returns the following error:

JSON.parse: unexpected character at line 1 column 2 of the JSON data

I have previously worked with this same JSON structure using C#, and had to deserialise this into a dictionary - information can be found on this post

Question

How can I parse this JSON into a javascript object, which will allow me to loop and evaluate each item?

You may not need to parse it any more.just assign in to a variable and use like variableName["FirstItem"] — brk
– brk, Commented May 27, 2018 at 17:27
Your right, this is already a javascript object, but how can I programmatically loop through each item? i.e. check the FirstItem, then check SecondItem, then ThirdItem etc... — devklick
– devklick, Commented May 27, 2018 at 17:31
For last comment see Access / process (nested) objects, arrays or JSON — charlietfl
– charlietfl, Commented May 27, 2018 at 17:43

Fathur Hidayat · Accepted Answer · 2018-05-27 17:44:48Z

3

JSON is Javascript Object with double quoted key like what you have in sample. So you don't need to parse it again, see this for explanation. You can access data from it using its key or if in case you want to get reviews from SecondItem, you can access it with :

SecondItem.reviews

or

SecondItem['reviews']

answered May 27, 2018 at 17:44

Fathur Hidayat

1111 silver badge2 bronze badges

Sign up to request clarification or add additional context in comments.

Comments

6502 · Accepted Answer · 2018-05-27 17:29:09Z

2

Apparently you are trying to parse an already parsed object

x = {A:1};       // A javascript object
JSON.parse(x);   // Error

this happens because JSON.parse will convert the object to a string first, getting "[object Object]" and then will try to parse this string.

answered May 27, 2018 at 17:29

6502

115k17 gold badges177 silver badges277 bronze badges

Collectives™ on Stack Overflow

Json to javascript dictionary

JSON Data

Question

2 Answers 2

Comments

Comments

Your Answer

Linked

Hot Network Questions

Collectives™ on Stack Overflow

JSON Data

Question

2 Answers 2

Comments

Comments

Your Answer

Sign up or log in

Post as a guest

Linked

Related