That is the most important skill to have when writing code.
Basically, press F12 in your browser and your browser's developer tools will open. First, check the console to see if you have errors. Then you can click in the line of code you want to test and create a breakpoint.
Too much to go into here, but yes, you'll want to learn to debug.
Social Media - A platform that makes it easier for the crazies to find each other.
Everyone is born right handed. Only the strongest overcome it.
Fight for left-handed rights and hand equality.