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
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
Which jQuery method is used to change the source of an image dynamically?
A). .attr()
B). .html()
C). .css()
D). .val()
What does the max-width property do in responsive design?
A). Sets a fixed width
B). Allows an element to shrink below a specified width
C). Ensures an element does not exceed a specified width
D). Hides an element if it exceeds a certain width
What does the @media (max-width: 768px) CSS rule indicate?
A). Styles will be applied when the device width is exactly 768px
B). Styles will be applied when the device width is less than or equal to 768px
C). Styles will be applied when the device width is greater than 768px
D). Styles will be applied when the device height is 768px or more
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 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
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
What is the benefit of using smooth scrolling in responsive design?
A). Enhances user experience by providing smoother transitions
B). Increases website load times
C). Prevents users from scrolling
D). Limits the amount of content visible at one time
Which CSS unit is commonly used in fluid grid layouts?
A). Pixels
B). Points
C). Percentages
D). Inches