Error AtlasError Documentation and Resolution
Back to searchMore JavaScript errors

JavaScript

JavaScript parser hit an unexpected token

SyntaxError: Unexpected token

JavaScript encountered syntax it did not expect at that point in the file, usually because nearby code is malformed or in the wrong context.

SyntaxError: Unexpected tokensyntax

Observed message

SyntaxError: Unexpected token

Why it happens

  • The file contains malformed syntax near the reported token.
  • A supported feature is being parsed in the wrong context or runtime.
  • A missing comma, bracket, or quote caused the parser to fail later in the file.

How to fix it

  1. Inspect several lines before the reported token, not just the token itself.
  2. Check delimiters, commas, and quotes for earlier syntax drift.
  3. Confirm the runtime or build tool supports the syntax you are using.

Official reference

MDN: SyntaxError: Unexpected token

Related errors

SyntaxError: missing ) after argument listJavaScript call or expression is missing a closing parenthesisSyntaxError: missing = in const declarationJavaScript const declaration is missing an initializerSyntaxError: duplicate formal argumentJavaScript function declared the same parameter twiceSyntaxError: return not in functionJavaScript return statement is outside a function

Explore more

JavaScriptBrowse more JavaScript errorssyntaxBrowse more syntax errors
JavaScript Unexpected token: causes and fixes | Error Atlas