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JavaScript call or expression is missing a closing parenthesis

SyntaxError: missing ) after argument list

JavaScript could not parse the expression because a function call or similar construct is missing a closing parenthesis.

SyntaxError: missing ) after argument listsyntax

Observed message

SyntaxError: missing ) after argument list

Why it happens

  • A function call is missing a closing parenthesis.
  • Nearby syntax such as quotes or commas caused the parser to lose track of the argument list.
  • A copy-paste or edit left delimiters unbalanced.

How to fix it

  1. Balance opening and closing parentheses in the surrounding expression.
  2. Inspect nearby commas, strings, and template literals for unclosed syntax.
  3. Use formatting or linting tools to spot delimiter mismatches quickly.

Official reference

MDN: SyntaxError: missing ) after argument list

Related errors

SyntaxError: missing = in const declarationJavaScript const declaration is missing an initializerSyntaxError: duplicate formal argumentJavaScript function declared the same parameter twiceSyntaxError: Unexpected tokenJavaScript parser hit an unexpected tokenSyntaxError: return not in functionJavaScript return statement is outside a function

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JavaScript missing ) after argument list: causes and fixes | Error Atlas