JavaScript Quiz

JavaScript Quiz

Vocational training

10 Qs

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JavaScript Quiz

Assessment

Quiz

Other

Vocational training

Practice Problem

Hard

Created by

Michelle Ploetz

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10 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What type of language is JavaScript?

JavaScript is a high-level, interpreted programming language.

JavaScript is a low-level, compiled programming language.

JavaScript is a markup language.

JavaScript is a database management system.

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

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

1stVariable

first_name

firstName

_firstName

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is the correct way to declare a function in JavaScript?

function functionName(parameters) { // function body }

def functionName(parameters): // function body

functionName(parameters) { // function body }

function functionName(parameters); // function body

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the typeof operator in JavaScript?

The typeof operator checks the data type of a value or variable.

The typeof operator converts a value to a string.

The typeof operator checks if a value is null.

The typeof operator checks if a value is undefined.

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How would you check if a variable x is equal to 5 in JavaScript?

x === 5

x = 5

x == 5

x != 5

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Which of the following is a correct statement about JavaScript?

JavaScript is used only for front-end development.

JavaScript is used for both front-end and back-end development.

JavaScript cannot be used for mobile app development.

JavaScript is a compiled language.

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of the "else" statement in JavaScript?

To specify an alternative block of code to be executed if the condition in the if statement is false.

To specify a block of code to be executed if the condition in the if statement is true.

To terminate the execution of a function.

To declare a variable.

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