How Can I Parse \'Relaxed\' JSON Without Using `eval`?

Parsing "Relaxed" JSON Without Resorting to eval

Parsing JSON data that follows a "relaxed" syntax with unquoted keys presents a challenge, especially when aiming to avoid the potentially hazardous use of eval.

One solution is to employ a regular expression replacement to sanitize the JSON string. By replacing unquoted key-value pairs with their quoted equivalents, we can create a JSON string that adheres to the standard syntax.

Consider the following example:

var badJson = "{muh: 2}";

// Sanitize the JSON using regular expression
var correctJson = badJson.replace(/(['"])?([a-z0-9A-Z_]+)(['"])?:/g, '"": ');

// Now we can safely parse the corrected JSON
JSON.parse(correctJson);

This approach allows us to parse "relaxed" JSON data without compromising security or triggering JSHint warnings, providing a convenient and safe alternative to eval for your testing purposes.

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