IFSD Quiz 02

What is JavaScript?

• A style sheet language for HTML
• A server-side programming language
• A scripting language for client-side web development
• A markup language for XML

Which keyword is used to declare a variable in JavaScript?

• int
• string
• var
• let

What does the "typeof" operator in JavaScript do?

• Checks if a variable is defined
• Returns the type of a variable
• Converts a variable to a string
• Rounds a number to the nearest integer

What is the correct way to comment a single-line code in JavaScript?

• /* comment */
• // comment
• <!-- comment -->
• ' comment

Which function is used to display a message in the browser's console?

• console.log()
• alert()
• document.write()
• print()

What is the output of the following code? let x = 5; console.log(x++);

• 4

• 6

• 5

• 3

Which statement is used to make a decision in JavaScript?

• for
• if
• while
• do...while

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

• function = myFunction()
• myFunction() => function {}
• function myFunction()
• function(myFunction)

What will be the value of "result" after executing the following code? let a = 10; let b = "5"; let result = a + b;

• 15
• 105
• "105"
• "15"

What is the purpose of the "return" statement in a function?

• To stop the execution of the function
• To define the function's name
• To specify the function's parameters
• To provide the function's output value