Scope in JavaScript: global, local, and block - what is it about?

The article discusses the differences between global, local, and block scope in JavaScript. Global scope refers to variables declared outside of functions, meaning they are accessible throughout the script. Local scope, on the other hand, pertains to variables declared within a function, limiting their accessibility to that specific function. Block scope applies to variables declared using keywords such as 'let' and 'const' within code blocks, like conditional statements or loops, which restricts their visibility to the point of declaration. The article also emphasizes the importance of understanding these scopes while coding to avoid variable conflicts and errors. Finally, the reader is provided with practical examples that illustrate how different types of scopes affect code execution, making it accessible to programmers of all levels.