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Syntax error - Glossary | MDN 1/3 https://developer.mozilla.org/en-US/docs/Glossary/Syntax_error reference web, html, css, javascript, documentation 2026-05-05T05:46:33.133667+00:00 kb-cron

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  1. Glossary
  2. Syntax error

Syntax error

An exception caused by the incorrect use of a pre-defined syntax. Syntax errors are detected while compiling or parsing source code. For example, if you leave off a closing brace (}) when defining a JavaScript function, you trigger a syntax error. Browser development tools display JavaScript and CSS syntax errors in the console.

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