Common JSON Errors
JSON syntax errors are common when manually creating or editing JSON data. Fortunately, most errors are easy to identify and fix.
1. Missing Commas
Each property in a JSON object normally needs to be separated from the next property with a comma.
2. Using Single Quotes
JSON strings use double quotation marks. Using single quotes can result in invalid JSON.
3. Missing Brackets or Braces
Every opening curly brace or square bracket must have a corresponding closing character.
4. Invalid Property Names
JSON object property names should be enclosed in double quotation marks.
5. Trailing Commas
Trailing commas after the final property or array item can cause JSON parsing errors.
How to Fix JSON Errors
Use a JSON validator or JSON formatter to identify the location of syntax problems. Correct the reported issue and validate the data again.
Conclusion
Understanding common JSON syntax errors makes debugging API responses, configuration files, and application data much easier.