Question 1

Analyze the following code:

let x = 10;

function test() {

let x = 20;

}

test();

console.log(x);

What will be displayed in the console as a result of its execution?

Options :

A : 10

B :

undefined

C : Nothing will show up.

D : "x"

Answer: A

Question 2

Analyze the following code:

let x = 10;

ocnsole.log(x);

What exception will be thrown as a result of its execution attempt?

Options :

A :

RangeError

B :

SyntaxError

C :

TypeError

D :

ReferenceError

Answer: D

Question 3

Analyze the following code:

let id = "100";

{

let id = 200;

id = id + 1;

console.log(id)

}

What will appear in the console as a result?

Options :

A : 1001

B : 201

C : 101

D : 200

Answer: B

Question 4

If a variable stores the value false then the variable:

Options :

A : will no longer be used in the program.

B : is of the Math type.

C : is of the Logical type.

D : is of the Boolean type.

Answer: D

Question 5

The minimum JavaScript online development environment will consist of:

(Select two correct answers)

Options :

A : a forum for developers to exchange information only

B : an online code editor

C : an interactive page with JavaScript documentation

D : the runtime environment

Answer: B,D

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