JAVASCRIPTWarningSyntax ErrorMay 24, 2026

Syntax Error

Uncaught SyntaxError: Invalid or unexpected token at the end of the script

What This Error Means

A syntax error that occurs when there is a misplaced or missing bracket, parenthesis, or semicolon at the end of the JavaScript code, causing the interpreter to fail to parse the code.

Why It Happens

This error often occurs when a developer accidentally leaves a closing bracket or parenthesis at the end of the script, or tries to include a JavaScript file without a closing tag in a HTML file.

How to Fix It

  1. 1To fix this error, locate the misplaced bracket, parenthesis, or semicolon at the end of the script and remove it. If the error occurs in a HTML file, ensure that the JavaScript file is properly included with a closing tag. Here's an example of how to fix this error: // Before (broken code)
  2. 2<!DOCTYPE html>
  3. 3<html>
  4. 4<head>
  5. 5<script>
  6. 6console.log('Hello World');
  7. 7]
  8. 8</script>
  9. 9</head>
  10. 10<body>
  11. 11</body>
  12. 12</html>
  13. 13// After (fixed code)
  14. 14<!DOCTYPE html>
  15. 15<html>
  16. 16<head>
  17. 17<script>
  18. 18console.log('Hello World');
  19. 19</script>
  20. 20</head>
  21. 21<body>
  22. 22</body>
  23. 23</html>

Example Code Solution

❌ Before (problematic code)
JavaScript
<!DOCTYPE html>
<html>
<head>
<script>
console.log('Hello World');
]
</script>
</head>
<body>
</body>
</html>
✅ After (fixed code)
JavaScript
<!DOCTYPE html>
<html>
<head>
<script>
console.log('Hello World');
</script>
</head>
<body>
</body>
</html>

Fix for Uncaught SyntaxError: Invalid or unexpected token at the end of the script

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