Javascript JSON.parse with\u0000

Question

使用 JSON.parse:

这有效:

JSON.parse('{\"V\":\"\u008c\"}') // => { V: '' }

这不会:

JSON.parse('{\"V\":\"\u0000\"}') // >> SyntaxError: Unexpected token   in JSON at position 6

这里的概念是什么？

Answer 1

您可以在 RFC 4627 中找到一些信息。例如:

2.5. Strings

The representation of strings is similar to conventions used in the C family of programming languages. A string begins and ends with quotation marks. All Unicode characters may be placed within the quotation marks except for the characters that must be escaped: quotation mark, reverse solidus, and the control characters (U+0000 through U+001F).

现在，与您的问题相关，您只需转义 unicode 字符上的 \ 即可进行解析:

JSON.parse('{"V":"\\u0000"}')

结果:{V: "�"}

仅供您引用，无需转义 javascript 中单引号字符串内的 "。