使用 JSON.parse 的 JSON.stringify 保持转义 unicode 个字符

Question

I have an input JSON like this (which really contains the literal values " – " (the encoded form of a unicode character)):

{"source":"Subject: NEED: 11/5 BNA-MSL \u2013 1200L Departure - 1 Pax"}

I read it with JSON.parse and it reads the – as – , which is fine for display in my app.

However, I need to export again the same JSON, to send it down to some other app. I want to keep the same format and have back the – into the JSON. I am doing JSON.stringify , but it keeps the – in the output.

Any idea what I could do to keep the \u syntax?

Answer 1

Using a replacer function in a JSON.stringify call didn't work - strings returned from the replacer with an escaped backslash produce a double backslash in output, and a single backslashed character is unescaped in output if possible.

Simply re-escaping the stringify result has potential:

 const obj = {"source":"Subject: NEED: 11/5 BNA-MSL – 1200L Departure - 1 Pax"} console.log(" stringify: ", JSON.stringify( obj)); console.log("& replaceAll: ", JSON.stringify(obj).replaceAll('–', '\–'));

using more complex string modifications as necessary.

However this looks very like an X solution to an XY problem. Better might be to fix the downstream parsing to handle JSON text as JSON text and not try to use it in raw form - particularly given that JSON text in encoded in utf-8 and can handle non-ASCII characters without special treatment.