Master JavaScript Variables & Scope in One Video!

👍👍👍 and subscribe for more JavaScript tutorials: Check out my best selling AppSec book: Check out my behind-the-scenes newsletter: In this video, learn four ways of declaring a variable in JavaScript: function scope, block scope, block-scope constant and a relatively unknown method with some odd quirks. This video covers var, let, const and global function definitions and their strengths / weaknesses.