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In JavaScript, scope refers to the visibility of a variable or function. There are two types of scope in JavaScript:

Global scope: A variable with global scope is available across the entire program. These variables can be accessed from anywhere in the program because they are declared outside of any specific function.
Local scope: A variable with local scope is only available within the function in which it is declared. These variables cannot be accessed from outside of the function.

Here is an example of global scope:var myVar = "This is a global variable";

function myFunction() {
console.log(myVar); // This will work because myVar is in global scope
}

myFunction();
In this example, the variable myVar is declared outside of any function, so it has global scope. This means that it can be accessed from anywhere in the program, including the myFunction() function.

Here is an example of local scope:function myFunction() {
var myVar = "This is a local variable";

console.log(myVar); // This will work because myVar is in local scope
}

myFunction();
In this example, the variable myVar is declared inside the myFunction() function, so it has local scope. This means that it can only be accessed from within the myFunction() function.

You forgot about reduced scopes for let variables.