JSON Object With or Without Quotes

Question

I am trying to learn JSON, i learned that any javascript object with the key in double quotes are considered as JSON object.

And i constructed this object

var jstr1 = {"mykey": "my value"};

But when i try to parse using JSON.parse(jstr1), i got the following error. see the screenshot.

But when i try to parse this

var jstr = '{"mykey": "my value"}';,

i got the success, see the screenshot. i got confused with this. Please explain me why this happens. what is the difference between the two forms.

And when i got JSON as a response from any services, how it would look like, whether it will be in form of jstr or jstr1

thanks in advance for any help.

Answer 1

You are creating a Javascript Object. If you want a JSON-string from it, use JSON.stringify.

So

var myObj = {mykey: "my value"}
   ,myObjJSON = JSON.stringify(myObj);

Based on comments: There is no such thing as a JSON Object. There are JSON-strings, which can be parsed to Javascript Objects. Javascript Objects can be stringified to JSON strings. Within a JSON-string keys and values are quoted. So the result of the above is a string containing '{"mykey":"my value"}'.

Try parsing myObjJSON in your browser console (using: JSON.parse(myObjJSON)) and you get: Object {mykey: "my value"}.