Machine Learning MCQ Questions with answers and solutions Page 45

Q. Which of the following are not key event properties?

(A) Code key
(B) Alt Key
(C) Ctrl Key
(D) Shift Key

💬 Discuss

✅ Correct Answer: (A) Code key

Explanation: altKey, ctrlKeY, shiftKey, and metaKey are key event object’s properties, which are set to true if the corresponding modifier key is held down when the event occurs.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which of the following key property holds the key name as a string?

(A) keyName
(B) key
(C) keyName(string)
(D) Nameofkey(string)

💬 Discuss

✅ Correct Answer: (B) key

Explanation: The DOM Level 3 Events defines a new key property that contains the key name as a string.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which of the following is not the value the key property will hold if the key is a function key?

(A) F8
(B) F2
(C) Home
(D) Left

💬 Discuss

✅ Correct Answer: (A) F8

Explanation: If the key is a function key, the key property will be a value like “F2”, “Home”, or “Left”.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which method is used to add a binding?

(A) binding()
(B) add_bind()
(C) bind()
(D) None of the mentioned

💬 Discuss

✅ Correct Answer: (C) bind()

Explanation: To add a binding, use bind() method.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which method is used to remove a binding?

(A) Unbind()
(B) removebind()
(C) remove(Bind b)
(D) unbind()

💬 Discuss

✅ Correct Answer: (D) unbind()

Explanation: To remove a bind, use unbind() method.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which of the following are the parameters passed to the keymap after installation?

(A) Key property
(B) Key name
(C) Keydown event’s object
(D) Key stroke

💬 Discuss

✅ Correct Answer: (C) Keydown event’s object

Explanation: After the keymap is installed, the following parameters are passed:

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. DOM Level 3 Events standardizes which of the following events?

(A) focusarea and focusover
(B) focusall and focusnone
(C) focusdown and focusup
(D) focusin and focusout

💬 Discuss

✅ Correct Answer: (D) focusin and focusout

Explanation: The DOM Level 3 Events specification standardizes the focusin and focusout events as bubbling alternatives to the focus and blur events.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which of the following are the unnecessary events currently?

(A) DOMActivate
(B) DOMFocusIn
(C) DOMNodeInserted
(D) All of the mentioned

💬 Discuss

✅ Correct Answer: (D) All of the mentioned

Explanation: Browsers are still allowed to generate events like DOMActivate, DOMFocusIn, and DOMNodeInserted, but these are no longer required.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which object is passed as the argument to handlers for keydown, keyup, and keypress events?

(A) KeyboardEvent
(B) Key Event
(C) Mouse Event
(D) Alphabet Event

💬 Discuss

✅ Correct Answer: (A) KeyboardEvent

Explanation: What is new in the DOM Level 3 Events specification is standardized support for twodimensional mouse wheels via the wheel event and better support for text input events with a textinput event and with a new KeyboardEvent object that is passed as the argument to handlers for keydown, keyup, and keypress events.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

Q. Which property reports rotation around three different mouse wheel axes?

(A) ctrlKey
(B) alterX
(C) alterY
(D) deltaX

💬 Discuss

✅ Correct Answer: (D) deltaX

Explanation: A handler for a wheel event receives an event object with all the usual mouse event properties, and also deltaX, deltaY, and deltaZ properties that report rotation around three different mouse wheel axes.

Published by Mr. Dubey ⭐ 111.54K Points at 28-Apr-2024 06:51 pm in Machine Learning

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