What is the purpose of using event delegation?
A). To handle events on elements that are dynamically added to the DOM.
B). To prevent events from bubbling up the DOM tree.
C). To trigger events programmatically.
D). To remove events from the DOM completely.
In event delegation, which element's event handler is triggered when an event occurs?
A). The parent element's event handler.
B). The child element's event handler.
C). The event handler of the first ancestor element.
D). The event handler of the last ancestor element.
How does event delegation contribute to better performance in web applications?
A). By reducing the number of event handlers attached to individual elements.
B). By increasing the number of event handlers attached to individual elements.
C). By requiring manual refreshing of the page whenever new elements are added.
D). By preventing events from bubbling up the DOM tree.
Which jQuery method provides better performance for event delegation: .on() or .click()?
A). .on()
B). .click()
C). Both methods provide similar performance.
D). It depends on the browser being used.
How does event delegation help in handling dynamically added DOM elements?
A). By attaching event handlers to parent elements, ensuring consistent handling.
B). By removing event handlers from the DOM altogether.
C). By binding event handlers directly to dynamically added elements.
D). By refreshing the page whenever new elements are added.
What is the advantage of using event delegation in single-page applications (SPAs)?
A). It ensures that events are captured on dynamically generated content.
B). It allows events to be triggered programmatically.
C). It prevents events from bubbling up the DOM tree.
D). It requires fewer resources compared to traditional web applications.
How does event delegation simplify event handling in web development?
A). By attaching event handlers to parent elements instead of individual elements.
B). By requiring manual refreshing of the page whenever new elements are added.
C). By removing events from the DOM altogether.
D). By triggering events programmatically.
How do you attach an event handler to dynamically added elements using event delegation?
A). By attaching the event handler to a parent element using .on() with a child selector.
B). By attaching the event handler directly to the dynamically added elements.
C). By using the .trigger() method on the parent element.
D). By manually refreshing the page every time new elements are added.
Which jQuery method is commonly used for event delegation?
A). .on()
B). .click()
C). .delegate()
D). .trigger()
How does event delegation help in improving code maintainability?
A). By reducing the number of event handlers attached to individual elements.
B). By increasing the complexity of event handling logic.
C). By requiring manual refreshing of the page whenever new elements are added.
D). By making it easier to trigger events programmatically.