Which CSS unit is commonly used in fluid grid layouts?
A). Pixels
B). Points
C). Percentages
D). Inches
What does the .on('click', function) method in jQuery do?
A). Attaches a click event handler to selected elements
B). Hides selected elements
C). Changes the background color of selected elements
D). Resizes selected elements
How does a fluid grid layout help in responsive design?
A). Provides a fixed layout
B). Uses relative units like percentages to adapt to different screen sizes
C). Limits the content to a fixed width
D). Hides content on smaller screens
What are CSS media queries used for?
A). Adding animations to elements
B). Applying styles based on the device characteristics
C). Creating image sliders
D). Defining CSS variables
How does the img { max-width: 100%; } CSS rule help in responsive design?
A). Forces images to a fixed size
B). Ensures images are never larger than their container
C). Prevents images from being displayed
D). Sets a minimum width for all images
What does the following CSS media query do: @media (orientation: portrait) { ... }?
A). Applies styles when the device is in landscape mode
B). Applies styles when the device is in portrait mode
C). Applies styles regardless of orientation
D). Applies styles only to desktop devices
Why is it important to use $(document).ready(function() { ... }); in jQuery?
A). To ensure the DOM is fully loaded before executing scripts
B). To increase script execution speed
C). To prevent scripts from running
D). To hide content until the user interacts with the page
Which jQuery method is used to change the source of an image dynamically?
A). .attr()
B). .html()
C). .css()
D). .val()
How can jQuery be used to toggle a navigation menu on small screens?
A). By using .hide() and .show() methods
B). By using .toggleClass() method
C). By using .slideToggle() method
D). By using .fadeIn() method
What is the purpose of using $(window).resize() in jQuery?
A). To detect when the window is resized and execute a function
B). To detect mouse clicks
C). To load new content
D). To change the CSS of an element