fundamental

Javascript is an _______ language?

• Object-Oriented

• Object-Based

• Procedural

• None of the above

Which of the following keywords is used to define a variable in Javascript?

• var

• let

• Both A and B

• None of the above

How can a datatype be declared to be a constant type?

• const

• var

• let

• constant

const number = 5;

console.log(number += 5);

• 5

• 10

• error

• undefined

const number = [1, 2, 3, [11, 10, "hello", ["makan", "siomay", ["banana"]]]];

number[4] = 5;

delete number[3][1];

console.log(number[3][2]);

• "hello"

• 11

• undefined

• 3

What is the output of the following code?

let x = 10;
let y = 5;
console.log(x - y);

• 5

• 10

• -5

• error

Which of the following is not a valid JavaScript variable name?

• _myVar

• my-var

• $myVar

• 2myVar

What does the 'typeof' operator return for the 'null' value in JavaScript?

• object

• null

• undefined

• string

What will be the output of the following code?

let x = 5;
let y = 3;
console.log(x * y);

• 8

• 15

• 53

• error

What is the result of the expression: 10 % 3?

• 1

• 3

• 0

• 10