Basic JavaScript Concepts

What is the purpose of an if statement in JavaScript?

• a) To execute code repeatedly

• b) To check if a condition is true or false

• c) To declare variables

• d) To stop a loop

Which of the following is a template literal in JavaScript?

• a) 'Hello'

• b) "Hello"

• c) `Hello`

• d) {{Hello}}

What is the purpose of a loop in JavaScript?

• a) To declare a variable

• b) To execute a block of code repeatedly

• c) To define a function

• d) To stop execution

What will the following code output?

• a) 5

• b) 5 6

• c) 0

• d) Error

Which of the following is NOT a feature of template literals?

• a) Multi-line strings

• b) Variable interpolation

• c) Embedding expressions

• d) Implicit type conversion

What is the difference between a while loop and a do...while loop?

• a) while loop executes the block at least once

• b) do...while checks the condition before executing the block

• c) do...while checks the condition after executing the block

• d) There is no difference

Which of the following operators is used to combine multiple conditions in an if statement?

• a) &&

• b) ||

• c) &

• d) Both a and b

How do you create a string with dynamic content using template literals?

• a) 'Hello' + variable

• b) `Hello ${variable}`

• c) ("Hello", variable)

• d) concat('Hello', variable)

Which of the following can be used inside a template literal?

• a) Numbers

• b) Strings

• c) Expressions

• d) All of the above

Which escape sequence represents a newline in JavaScript strings?

• • a) \t

• • b) \n

• • c) '

• • d) "