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

How does jQuery help in optimizing images for responsive design?

A). By resizing images on the server

B). By dynamically loading different images based on viewport size

C). By reducing image quality

D). By increasing image dimensions

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

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

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

Which jQuery method can be used to animate smooth scrolling for anchor links?

A). .fadeIn()

B). .slideUp()

C). .animate()

D). .hide()

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()

What is the primary goal of responsive web design?

A). To reduce server load

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Which jQuery event is triggered when the window is resized?

A). .resize()

B). .change()

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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

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D). Decreases carousel visibility