javascript - JSON.parse without escaping -

this question has answer here:

• get backslashes inside string - javascript 4 answers

is there anyway in javascript:

$ cat test.json  {"body":"\u0000"}  $ python3 -c 'import json; print(json.load(open("test.json", "r")))' {'body': '\x00'} 

notice, data above 1 \ (does not need escaped). have following situation in javascript:

json.parse('{"body":"\\u0000"}') // works json.parse('{"body":"\u0000"}') // not work 

with potentially utf-8 data comming binary source (websocket), can data processed directly in first python example above?

string characters \u0000 through \u001f considered control characters, , according rfc-7159 not allowed characters use in json , must escaped, stated in section 7.

what trying put unescaped control characters json, not acceptable, have escape first, non of languages accept it, python.

the correct answer place utf-8 encoded value string containing json format.

this correct json, , parsed json parser in language, in javascript:

{"body":"\u0000"} 

this incorrect json (consider [nul] nul control character, cannot represented in text):

{"body":"[nul]"} 

that's why json.parse('{"body":"\\u0000"}') works , json.parse('{"body":"\u0000"}') doesn't.

hope, clarifies what's wrong test.