Firefox has an inbuilt Javascript error detection mechanism. It not only detects Javascript errors but also XML or CSS or other web language errors. It also allows you to view those errors in real time. You don’t need any sort of configuration in order to view those errors, as told earlier that the functionality is inbuilt, you can view those errors directly from within the firefox console.
Here are 2 methods to view javascript errors in firefox error console
- Open firefox –> From “Tools” menu –> Select “Error Console”
- Alternatively you can also press
"Ctr + Shift + J"key combination
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