String to JSON: Parse, Validate, and Handle Errors
Parse strings to JSON safely: handle encoding errors, BOM markers, and malformed input across JavaScript, Python, Go, and Java with examples.
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Tags: json, developer-tools, parsing
String to JSON: Parse, Validate, and Handle Errors in Any Language Parsing a JSON string into a usable data structure is something every developer does dozens of times per day. But error handling is where most code falls short. Malformed JSON is inevitable in production — from API responses that go wrong, Excel-exported data, or user-pasted input. A robust parse wrapper prevents crashes and makes debugging faster. JavaScript: JSON.parse() The most basic form: throws a for invalid input. Always wrap it: also accepts a reviver function as a second argument. This lets you transform values during parsing — useful for converting ISO date strings to objects: Python: json.loads() Python maps JSON types to native types automatically: JSON → Python JSON → Python JSON → Python JSON → Python or JSON…
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