Common JavaScript Errors and How to Fix Them
Browse all documented JavaScript errors with detailed explanations, root causes, and step-by-step fixes.
SyntaxError: Invalid or unexpected token
This error occurs when JavaScript encounters a syntax it doesn't understand or expects a different token than what it fo…
Uncaught SyntaxError: Unexpected token '}' in JSON at position 22
This error occurs when the JavaScript interpreter encounters unexpected syntax, in this case, an unexpected closing curl…
Unexpected token ILLEGAL (while parsing file: script.js, line: 3)
This error occurs when JavaScript encounters an unexpected character or token in the code, which is not a part of the va…
Unexpected token import in /path/to/script.js on line 1
A syntax error occurs when the JavaScript interpreter encounters a statement or expression that doesn't follow the langu…
SQLITE_ERROR: near "ORDER": syntax error at line 1
This error occurs when a SQL query contains a syntax error, in this case, trying to use the 'ORDER' keyword without spec…
Error: Mismatched dependency version for react-router-dom. Expected ^6.3.0 but g
This error occurs when a project is using a version of a popular JavaScript framework (in this case, react-router-dom) t…
Error: Unable to resolve component 'MyComponent' from 'src/components/MyComponen
This error occurs when React is unable to locate the component file it's trying to render. It's often caused by a typo i…
Expected expression, got '}'
This error occurs when the JavaScript interpreter encounters a syntax error in the code, specifically when it expects an…
RangeError: Maximum call stack size exceeded at eval (/home/user/project/node_mo
This error occurs when the function calls itself recursively without a base case or when it exceeds the maximum call sta…
Unexpected token import in /home/user/project/src/script.js on line 1
This error occurs when the JavaScript interpreter encounters a syntax that is not valid in the current JavaScript versio…
MongooseError: Operation `users.updateOne()` buffering timed out after 30000ms d
This error occurs when a MongoDB update operation times out due to an ongoing write lock, preventing the update from com…
Unexpected token 'class' in JSON at position 0
This error occurs when the JavaScript interpreter is expecting a JSON object but encounters a class definition instead, …
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