Complete Java script

Complete Java script

12th Grade

20 Qs

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Complete Java script

Complete Java script

Assessment

Quiz

Computers

12th Grade

Practice Problem

Easy

Created by

Akhil Badugu

Used 1+ times

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20 questions

Show all answers

1.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What are the different data types in JavaScript?

array

integer

float

string, number, boolean, object, function, undefined, null

2.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the difference between let, var, and const in JavaScript.

let is block-scoped, var is block-scoped, and const is block-scoped but can be reassigned.

let is block-scoped, var is block-scoped, and const is function-scoped.

let is block-scoped, var is function-scoped, and const is block-scoped but cannot be reassigned.

let is function-scoped, var is block-scoped, and const is block-scoped but can be reassigned.

3.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you declare a function in JavaScript?

def functionName(parameters): # code here

function functionName(parameters) { // function body }

void functionName(parameters) { // code here }

functionName(parameters) { // code here }

4.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the purpose of conditional statements in JavaScript?

Conditional statements in JavaScript are used for mathematical calculations

Conditional statements in JavaScript are used for playing audio files

Conditional statements in JavaScript are used to make decisions in the code based on certain conditions.

Conditional statements in JavaScript are used for styling web pages

5.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

What is the syntax for a 'for' loop in JavaScript?

for(initialization; condition; iteration) { // code block to be executed }

for(initialization; condition) { // code block to be executed }

for(condition; iteration) { // code block to be executed }

for(initialization; iteration) { // code block to be executed }

6.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

How do you create an array in JavaScript?

array myArray = [1, 2, 3, 'hello'];

myArray = [1, 2, 3, 'hello'];

const myArray = [1, 2, 3, 'hello'];

let myArray = [1, 2, 3, 'hello'];

7.

MULTIPLE CHOICE QUESTION

30 sec • 1 pt

Explain the concept of objects in JavaScript.

Objects in JavaScript are used to store collections of data and more complex entities. They consist of key-value pairs where keys are strings (or Symbols) and values can be any data type.

Objects in JavaScript cannot contain key-value pairs.

Objects in JavaScript are not a fundamental concept in programming.

Objects in JavaScript are used to store single values only.

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