Complete guide to JavaScript runtime errors, exceptions, and how to fix them.
Occurs when trying to access a variable that has not been declared or is out of scope.
Occurs when trying to access a property or method on an undefined or null value.
Occurs when the JavaScript parser encounters invalid syntax in the code.
Occurs when a function calls itself too many times, causing a stack overflow.
Occurs when using URI-related functions with invalid URI sequences.
Occurs when there's an error in the eval() function. Rarely used in modern JavaScript.
Occurs when a Promise is rejected but no catch handler is provided.
Occurs when trying to import a module that doesn't exist or the path is incorrect.
An internal error in the JavaScript engine occurred, often due to too much recursion or other engine limitations.
Multiple errors were wrapped together, commonly used with Promise.allSettled() or Promise.any().
A DOM operation failed, such as invalid node operations or security violations.