◆ErrorOracle
javascript

SyntaxError: JSON.parse: unexpected character at line 1 col…

Error message

SyntaxError: JSON.parse: unexpected character at line 1 column 1

What broke

The JSON.parse function is trying to parse a string that is not formatted correctly as JSON. This often happens when the input is empty or contains invalid characters.

Why it broke

It broke because JSON.parse expects a properly formatted JSON string, and if the input starts with an unexpected character or is empty, it cannot interpret it as valid JSON.

How to fix

To fix this, ensure that the input string to JSON.parse is a valid JSON format. Check for any leading or trailing whitespace and ensure that the string is not empty.

Code fix

const jsonString = '{"key": "value"}'; const parsedData = JSON.parse(jsonString);

Explained by ErrorOracle

Prevention tip

Check for any leading or trailing whitespace and ensure that the string is not empty.

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