带有双引号的JSON数据

Question

I am getting data from api call which contains double quotes. for example data = '{"firstName":""John""}'

how to parse this data into json. expected-output: result = JSON.parse(data) and result.firstname should give output as "John" not John

Answer 1

As @Cid points out, that is invalid JSON.

You will need to sanitize it first:-

var json = data.replace(/""/g, '"');

var x = JSON.parse(json);

If you want to keep the inner quotes, you'll need to use something like this:-

var json = data.replace(/(\".*\":)\"\"(.*)\"\"/g, '$1 "\\"$2\\""');

var x = JSON.parse(json);

However, you may need to fiddle with the regex if it conflicts with other parameters.

You can review the regex above at https://regex101.com/ to get an explanation of how the regex matches:-

/(\".*\":)\"\"(.*)\"\"/g

  1st Capturing Group (\".*\":)
    \" matches the character " literally (case sensitive)
    .* matches any character (except for line terminators)
      * Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)
    \" matches the character " literally (case sensitive)
    : matches the character : literally (case sensitive)

  \" matches the character " literally (case sensitive)
  \" matches the character " literally (case sensitive)

  2nd Capturing Group (.*)
    .* matches any character (except for line terminators)
      * Quantifier — Matches between zero and unlimited times, as many times as possible, giving back as needed (greedy)

  \" matches the character " literally (case sensitive)
  \" matches the character " literally (case sensitive)

Global pattern flags
g modifier: global. All matches (don't return after first match)

The $1 and $2 in the replacement text correspond to the capture groups in the regex. See String.prototype.replace() for details.

Answer 2

Try With this

var json = '{"firstName":""John""}';       //Let's say you got this
json = json.replace(/\"([^(\")"]+)\":/g,"$1:");  //This will remove all the quotes
json;