The human readable error messages that QJSon generates for incorrect JSON are not really guiding the user to see the problem. This becomes obvious when comparing it to the error messages e.g. JSON.parse in a web browser generates :

Using {} instead of []

Here the user mixed up array syntax and object syntax:

{ "hello", "world" }

QJson error:

missing name separator

JavaScript error:

JSON.parse: expected ':' after property name in object at line 1 column 10 of the JSON data

Similarly, [ "Key": "Value" ] got missing value separator from QJson.

Forgetting comma in object list

{
    "hello": "world"
    "hi": "there"
}

QJson error

unterminated object

JavaScript error:

JSON.parse: expected ',' or '}' after property value in object at line 3 column 5 of the JSON data

Missing quotes

{ "hello": world }

QJson error

illegal number

JavaScript error:

JSON.parse: unexpected character at line 1 column 12 of the JSON data