JavaScript Errors - Capturing the Low Hanging Fruit
One easy thing you can do is look for a yellow triangle in the bottom-left corner of your browser window. If you see an error listed there, double-click the icon to open a small window that will tell you the error’s line number. Caveat: Keep in mind that sometimes one error often times leads to another error. So, the line number shown might not be the end of the story, only its beginning…
When your code is not working as expected, buckle down! Something is wrong. You just need to keep your wits, use your skills, and figure it out. You can do it!