React DOM events quiz
React DOM events quiz
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Question 1
How does React handle DOM events compared to plain HTML?
React uses lowercase event names and string handlers
React uses camelCase event names and functions
React binds events using jQuery
React does not support DOM events
Question 2
What is passed automatically to every React event handler?
DOM node
HTML element
Event object
State value
Question 3
How does onClickCapture differ from onClick in React?
It only works with buttons
It triggers during the bubbling phase
It fires during the capture phase
It prevents default behavior
Question 4
When does the onMouseDown event fire in React?
When a mouse button is released
When a mouse button is held down
When the mouse enters the element
When a mouse button is clicked
Question 5
What triggers the onDoubleClick event in React?
Two fast mouseovers
A mouse press and release
Scrolling and clicking together
Two consecutive clicks in a short time
Question 6
What must you do in a React form's onSubmit handler to prevent page reload?
Call
form.stop()Return false
Use
event.preventDefault()Set
autoSubmitto false
Question 7
Where is onSubmit usually used in React?
On
<form>elementsOn
<div>elementsOn
<button>elementsOn
<input>elements
Question 8
Which element must be scrollable for onScroll to fire in React?
<form>
The element with
onScrollattachedThe entire document
<input>only
Question 9
What does the onBlur event in React detect?
Input field gains focus
Element is hovered
Page is reloaded
Element loses focus
Question 10
What is a "SyntheticEvent" in React?
A custom event created manually
A wrapper around browser events for consistency
A third-party event library
An error caused during bubbling
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