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JS
JavaScript error

SyntaxError

The JavaScript exception "identifier starts immediately after numeric literal" occurs when an identifier started with a digit. Identifiers can only start with a letter, underscore (\_), or dollar sign ($).

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 or unexpected token (V8-based)
As listed by MDN Web Docs
SyntaxError: identifier starts immediately after numeric literal (Firefox)
As listed by MDN Web Docs
SyntaxError: No identifiers allowed directly after numeric literal (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.