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.
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.
When is event delegation particularly useful in web development?
A). When events need to be triggered programmatically.
B). When dealing with a static DOM structure.
C). When handling events on elements that are dynamically added or removed.
D). When preventing events from bubbling up the DOM tree.
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.
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.
What is the syntax for using event delegation with jQuery's .on() method?
A). $(parentElement).on(eventType, childSelector, eventHandler);
B). $(childElement).on(eventType, parentSelector, eventHandler);
C). $(parentElement).delegate(eventType, childSelector, eventHandler);
D). $(childElement).delegate(eventType, parentSelector, eventHandler);
What is the primary advantage of using event delegation in web development?
A). Simplifies event handling by attaching handlers directly to individual elements.
B). Ensures events are captured on dynamically added elements.
C). Increases the complexity of event handling logic.
D). Requires manual refreshing of the page whenever new elements are added.
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.
Which jQuery method is deprecated in favor of .on() for event delegation?
A). .bind()
B). .live()
C). .delegate()
D). .trigger()
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.