JavaScript Quiz

What type of language is JavaScript?

• Assembly language

• Compiled language

• Object-based scripting language

• Machine language

What is the purpose of the JavaScript Translator?

• To compile JavaScript code

• To debug JavaScript code

• To translate JavaScript code for the web browser

• To execute JavaScript code

What is the correct syntax to declare a variable in JavaScript?

• let x = 10;

• var x = 10;

• variable x = 10;

• var 1x = 10;

Which of the following is a primitive data type in JavaScript?

• Object

• Array

• String

• Function

What does the write() method do in JavaScript?

• Outputs values with a newline character

• Outputs values without a newline character

• Writes values to a file

• Displays values in an alert box

What is the purpose of the if statement in JavaScript?

• To execute code only if a specified condition is true

• To loop through a block of code

• To define a function

• To declare a variable

Which loop is used when the number of iterations is known?

• while loop

• for loop

• do...while loop

• foreach loop

What is the output of the following code: alert('Hello World');?

• Displays 'Hello World' in the console

• Displays 'Hello World' in an alert box

• Logs 'Hello World' to the console

• Returns 'Hello World'

What is the purpose of the confirm() box in JavaScript?

• To display a message to the user

• To ask the user for input

• To verify or accept something from the user

• To display a warning message

What is the scope of a variable declared with 'let' inside a block?

• Block scope

• Function scope

• Local scope

• Global scope