1586720 - Json Parser cannot parse NaN

Status: RESOLVED INVALID

(Firefox :: Untriaged, defect)

Description

[jan]

Attachment: Screenshot from 2019-10-07 13-46-13.png

User Agent: Mozilla/5.0 (X11; Linux x86_64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.87 Safari/537.36

Steps to reproduce:

I loaded json data from a website that contained NaN values.

Actual results:

Got the error "SyntaxError: Json.Parse: Unexpected character at line x column y of the JSON data.

Expected results:

Should have correctly parsed the NaN value.

Comment 1

[Francesco Lodolo [:flod]]

JSON specs don't allow for NaN
http://json.org/

console.log( JSON.parse('{ "x" : NaN  }') );
SyntaxError: JSON.parse: unexpected character at line 1 column 9 of the JSON data

console.log(JSON.stringify({ x: NaN }));
{"x":null}