What is the global scope in JavaScript?

What is the global scope in JavaScript?

The global scope in JavaScript refers to the outermost context where variables and functions are accessible from anywhere in your code.

Can you give me an example of a global variable?

Sure! A global variable can be declared like this: var myGlobalVar = 'Hello, World!'; This variable can be accessed from any function.

What happens if I declare a variable without var, let, or const?

If you declare a variable without var, let, or const, it automatically becomes a global variable, which can lead to unintended consequences.

How can I avoid polluting the global scope?

You can avoid polluting the global scope by using IIFE (Immediately Invoked Function Expressions) or modules to encapsulate your variables.