How to Safely Parse Unconventional JSON in JavaScript?

Parse Unconventional JSON Safely

Parsing JSON in JavaScript is straightforward using the built-in JSON.parse function. However, when dealing with "relaxed" JSON, where key names lack quotation marks, an error occurs.

This quandary arises when conducting JSON-based communication in development environments or automating test scripts. While eval offers a quick solution, it poses security concerns.

Escaping the Eval Pitfall

An alternative to eval while still allowing relaxed syntax involves sanitizing the JSON beforehand. By utilizing regular expressions, key names can be enclosed in double quotes, conforming to proper JSON structure. This approach allows us to safely parse unconventional JSON without compromising security.

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