JavaScript: Scope

Question 1

A variable declared in global scope is available to ____________?

Answer 1

All functions

Question 2

A variable declared in local scope is only available to ____________?

Answer 2

That function

Question 3

Global Scope in Syntax

Answer 3

const hello = “Hello”;

function sayHello() {
console.log(hello);
return;
}

const sayHelloAgain = function () {
console.log(hello);
return;
};

sayHello();
sayHelloAgain();

Question 4

Local Scope in Syntax

Answer 4

function sayGoodbye() {
const goodbye = “Goodbye”;
console.log(goodbye);
return;
}

Question 5

What is shadowing?

Answer 5

Shadowing happens when the same variable is used in the local and global scope.

Question 6

Shadowing in Syntax

Answer 6

const shadow = “Hello”;
console.log(shadow);

function sayWhat() {
console.log(shadow);
return;
}

const sayWhatAgain = function () {
const shadow = “Goodbye”;
console.log(shadow);
};

sayGoodbye();
sayWhat();
sayWhatAgain();