Substituting characters, backslashes, and double quotes may not function properly

Trying to replace a single backslash \ with two \\, but encountering issues with double quotes.

var json = {
    "DateToday": "2021-08-11",
    "MetaData": [
        {
            "id": "222",            
            "nameUsed": " \"data\" somemorefillerdata» - somemorefillerdata «somemorefillerdata»",
            "type": "movies"
        }
    ]
}

let newJson = JSON.stringify(json)
let newnewJson = newJson.replace(/\\"/g, "\\\\");
let newnewnewJson = JSON.parse(newnewJson)
console.log(newnewnewJson)

Although it kind of works, the output is missing the quotes as shown below:

{
  DateToday: '2021-08-11',
  MetaData: [
    {
      id: '222',
      nameUsed: ' \\data\\ somemorefillerdata» - somemorefillerdata «somemorefillerdata»',
      type: 'movies'
    }
  ]
}
javascriptjsoncsvescaping

Answer №1

There doesn't seem to be a need to replace \ with \\. In this scenario, an object literal serves as the starting point. It is then converted into a string using `stringify`, producing the expected output. The string is then parsed back into an object, resulting in the anticipated outcome.

let personObj = {
  Name: "John Doe",
  Age: 30,
  Occupation: "Developer"
};

let personStr = JSON.stringify(personObj)
console.log(personStr);

let newPersonObj = JSON.parse(personStr)
console.log(newPersonObj.Occupation)

Answer №2

Whenever you find the need to insert an additional backslash, make the following adjustment:

let updatedJson = newJson.replace(/\\"/g, `\\\\\\\\`);

Based on my interpretation of the query, your goal is to achieve this result:

" \\data\\ somemorefillerdata» - somemorefillerdata «somemorefillerdata»"

Prior to the update, it appeared as follows:

" \data\ somemorefillerdata» - somemorefillerdata «somemorefillerdata»"

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