What does validateForm() function return on invalid input?

• A) undefined
• B) null
• C) false
• D) true

What does the i modifier (flag) do in a regular expression?

• A) Matches exact text only
• B) Searches multiple lines
• C) Ignores case (case-insensitive search)
• D) Searches the whole text globally

What is the purpose of compare function in sort()?

• A) To define custom sorting order
• B) To reverse array
• C) To delete elements
• D) To join arrays

What is the role of the default case in a switch statement?

• A) It executes when no matching case is found
• B) It executes first in all cases
• C) It is a mandatory case
• D) It must always be written at the end

How can we access a form using JavaScript?

• A) document.forms["formName"]
• B) window.form()
• C) document.getElementByClass()
• D) getForm()

What is the result of typeof null?

• A) object
• B) undefined
• C) string
• D) null

What is a breakpoint in debugging?

• A) A loop inside a program
• B) A variable used in JavaScript
• C) A point where code execution temporarily stops for checking values
• D) A type of error in code

Which one is a reserved word?

• A) value
• B) myVar
• C) name
• D) class

A trailing comma in an array may cause:

• A) No change at all
• B) Better performance
• C) Unexpected behavior or errors in some cases
• D) Faster execution

All selectors in jQuery start with _______________.

• A) ~()
• B) $()
• C) %()
• D) #()

When does the finally block run in JavaScript?

• A) Only when there is an error
• B) It always runs whether there is an error or not
• C) Only when there is no error
• D) It never runs

How do you create an array in JavaScript using literal syntax?

• A) var arr = <>
• B) var arr = []
• C) var arr = ()
• D) var arr = {}

In DOM tree, a descendant can be ___________.

• A) Child, grand-child, great grand-child and so on.
• B) Parent, grand parent, great grand-parent and so on.
• C) Siblings
• D) All of the given options

What is the result of the expression "2" > "12" in JavaScript?

• A) Runtime error
• B) false
• C) true
• D) NaN

innerWidth() method of JQuery returns:

• A) width of an element including border
• B) width of an element excluding border
• C) width of an element including padding
• D) width of an element excluding padding

What is the result of Number("3.14")?

• A) NaN
• B) 3
• C) "3.14"
• D) 3.14

Which approach improves code reusability in AJAX programs?

• A) Loop structure
• B) Array usage
• C) Switch statement
• D) Callback function

What is the role of the first statement in a for loop?

• A) To display output
• B) To define the loop condition
• C) To initialize the loop variable
• D) To increment the loop variable

Which property returns XML data?

• A) getXML
• B) XMLResponse
• C) responseText
• D) responseXML

AJAX is about:

• A) Receiving data from server without reloading the whole page
• B) Both Sending and receiving data from server by reloading the whole page
• C) Sending data to server without reloading the whole page
• D) Both sending and receiving data from server without reloading the whole page