Q
What does the following jQuery code achieve: $('img').each(function() { var src = $(this).attr('src'); if($(window).width() < 768) { $(this).attr('src', src.replace('large', 'small')); } });

Answer & Solution

Answer: Option B
Solution:
This jQuery code replaces the image sources with smaller versions for screens smaller than 768 pixels, optimizing performance and load times on mobile devices.
Related Questions on Average

What is a common use of jQuery in responsive web forms?

A). To restrict form submissions

B). To dynamically validate form fields based on viewport size

C). To increase form complexity

D). To reduce form functionality

Which jQuery event is triggered when the window is resized?

A). .resize()

B). .change()

C). .load()

D). .click()

How can jQuery complement CSS3 media queries in responsive design?

A). By replacing CSS3 entirely

B). By providing dynamic functionality and interactions

C). By increasing website load times

D). By limiting the use of media queries

How can jQuery be used to handle touch events on mobile devices?

A). By using .on('swipeleft') and .on('swiperight')

B). By using .click() and .hover()

C). By using .resize() and .load()

D). By using .submit() and .change()

Why should images be optimized for different devices in responsive web design?

A). To improve loading times and performance

B). To decrease image quality

C). To increase server load

D). To restrict image visibility

How can jQuery be used to load different image sizes based on the viewport?

A). By using .append()

B). By using .load()

C). By dynamically changing the image src attribute based on viewport size

D). By using .resize() to stretch images

What does the following jQuery code do: $('.carousel').on('swipeleft', function() { $(this).carousel('next'); });

A). Enables swipe gestures to navigate the carousel

B). Disables carousel functionality

C). Increases carousel speed

D). Decreases carousel visibility

Which jQuery event is useful for creating swipe gestures on touch devices?

A). .click()

B). .hover()

C). .swipe()

D). .keypress()

Why is it important to handle viewport orientation changes in responsive design?

A). To increase website loading times

B). To adapt the layout and functionality to different orientations

C). To restrict access to landscape mode

D). To decrease user engagement

What is the primary goal of responsive web design?

A). To reduce server load

B). To adapt to different screen sizes and devices

C). To increase website loading speed

D). To restrict website access to certain devices