json ⊄ js

Conventional wisdom says that JSON is a subset of JavaScript. The thing is it isn’t. According to the spec JSON strings can contain any unicode character except " or / or control character. This means that the following string is perfectly valid JSON: {"str": "own ed"}Try copy and pasting that text into the console and assign it to a variable. Go on, we’ll wait. Yeah, “SyntaxError: Unexpected toke

[efcl]

eval(JSON.stringify())して例外が起きるケース。 https://github.com/tc39/proposal-json-superset

[Layzie]

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