______________________ is used to Insert content at the end of the selected elements.

• A) Prepend()
• B) Before()
• C) After()
• D) Append()

GET request sends data via:

• A) Header only
• B) Cookie
• C) URL
• D) Body

What is the best way to create an object in JavaScript?

• A) new Object()
• B) {} (object literal)
• C) create()
• D) Object()

How can you determine if a variable is an array in JavaScript?

• A) Inspecting the variable's constructor
• B) Using the typeof operator
• C) Checking if the variable's type is "array"
• D) Using the isArray() function

Which of the following is syntax of creating XMLHttpRequest?

• A) new AJAX()
• B) new HTTPRequest()
• C) createRequest()
• D) new XMLHttpRequest()

Which loop evaluates the condition after executing the code block?

• A) for loop
• B) do/while loop
• C) if statement
• D) while loop

The unary + operator is used to:

• A) Convert an object into an array
• B) Convert a number into a string
• C) Convert a string into a number
• D) Convert a boolean into a string

undefined means:

• A) String value
• B) Value not assigned yet
• C) Null value
• D) Number value

What is the function of document ready event?

• A) None of the given options
• B) To prevent an event from performing its default action
• C) To prevent any jQuery code from running after the document has finished loading
• D) To prevent any jQuery code from running before the document is finished loading

Which key is commonly used to open Developer Tools in most browsers?

• A) F10
• B) F12
• C) F5
• D) F1

HTML validation is performed by:

• A) Server only
• B) Browser automatically
• C) JavaScript only
• D) Database

Which of the following is a fast, small, and feature-rich JavaScript library?

• A) SQuery
• B) None of the given options
• C) FQuery
• D) jQuery

Which attribute triggers validation on form submit?

• A) onclick
• B) onsubmit
• C) onload
• D) onchange

What is responseXML used for?

• A) Rendering HTML only
• B) Handling CSS data
• C) Parsing XML response data
• D) Processing JSON only

What does setting async = true mean in an AJAX request?

• A) The server does not respond
• B) The browser stops execution until response is received
• C) The request is disabled
• D) The request runs in the background without blocking the page

What is the result of typeof NaN?

• A) string
• B) number
• C) undefined
• D) NaN

Which of the following method(s) is/are used for traversing up the DOM tree?

• A) parent()
• B) grandParents()
• C) parental()
• D) parents() and grandParents()

Loop performance improves when you:

• A) Move calculations outside the loop
• B) Use recursion
• C) Increase iterations
• D) Add extra variables

Why should we avoid eval()?

• A) All of the above
• B) It is unnecessary
• C) It has security risks
• D) It is slow

The break statement is commonly used in:

• A) Objects
• B) Functions
• C) Loops and switch statements
• D) Arrays