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JS
JavaScript error

SyntaxError

The JavaScript exception "missing : after property id" occurs when objects are created using the object initializer syntax. A colon (:) separates keys and values for the object's properties.

Reference entryJavaScriptFetched
This is a reference entry from MDN Web Docs. A full explanation with fixes has not been written yet.

The error messages

SyntaxError: Invalid shorthand property initializer (V8-based)
As listed by MDN Web Docs
SyntaxError: missing : after property id (Firefox)
As listed by MDN Web Docs
SyntaxError: Unexpected token '='. Expected a ':' following the property name 'x'. (Safari)
As listed by MDN Web Docs
SyntaxError: Unexpected token '+'. Expected an identifier as property name. (Safari)
As listed by MDN Web Docs

Details

Category
SyntaxError
Severity
error
Runtime
both

Related errors

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Source: MDN Web Docs. Data fetched 2026-09-25T01:48:37.274Z.