How do you fix a JavaScript error?

What are the different ways to fix JavaScript errors

If you encounter a JavaScript error, check the following:

-Make sure you are using the latest version of your web browser.

-Check to see if there is a new version of the script in the repository, and then try downloading that version.

-Check to see if there is a new version of the script on the website where you downloaded it from, and then try downloading that version.