How do I troubleshoot JavaScript engine issues?

I'm having trouble with my JavaScript code not running in the browser. What should I check first?

First, check the browser's console for any error messages. They can provide clues about what's going wrong.

I see a 'SyntaxError'. What does that mean?

A 'SyntaxError' indicates that there's a mistake in your code's syntax. Look for missing brackets, commas, or incorrect variable names.

I found a missing bracket. After fixing it, my code still doesn't work. What next?

If the error persists, try clearing your browser's cache and reloading the page. Sometimes old scripts can cause issues.

I cleared the cache, but now I see a 'ReferenceError'. What does that mean?

A 'ReferenceError' means you're trying to use a variable that hasn't been declared. Check your variable declarations.