Which property is commonly used in JavaScript to hide an HTML element without removing its space in the layout?
A). visibility
B). hidden
C). display
D). none
How can you hide an HTML element using JavaScript by modifying its CSS class?
A). element.style.display = 'none';
B). Add an external CSS file to the HTML document and link it.
C). Use the classList property to add a class with hidden properties.
D). element.classList.add('hidden');
How can you dynamically hide an HTML element using JavaScript based on a button click event?
A). element.style.visibility = 'hidden';
B). element.display = 'none';
C). element.style.display = 'none';
D). element.visibility = 'hidden';
How can you hide an HTML element using JavaScript by modifying its inline style directly?
A). element.setAttribute('style', 'display: none;');
B). element.style.display = 'none';
C). element.style.visibility = 'hidden';
D). element.display = 'none';
Which JavaScript method is commonly used to hide an HTML element by adding a CSS class with hidden properties?
A). element.style.visibility = 'hidden';
B). element.classList.add('hidden');
C). element.style.display = 'none';
D). element.classList.toggle('hidden');
How can you hide multiple HTML elements using JavaScript by adding a CSS class with hidden properties?
A). element.style.display = 'none';
B). element.classList.add('hidden');
C). element.style.visibility = 'hidden';
D). element.style.display = 'block';
How can you hide an HTML element using JavaScript by setting its display property to 'none' in an external CSS file?
A). element.style.display = 'none';
B). Link the HTML file to an external CSS file with a class that sets display: none;.
C). Import the external CSS file using JavaScript and apply it to the element.
D). element.display = 'none';
What happens to an HTML element when its display property is set to 'none' using JavaScript?
A). It is removed from the DOM.
B). It becomes invisible but still occupies space in the layout.
C). It becomes visible but disabled.
D). It becomes hidden but still interacts with the layout.
How can you hide an HTML element using JavaScript by applying an external CSS class?
A). element.style.display = 'none';
B). Add an external CSS file to the HTML document and link it.
C). Use the classList property to add a class with hidden properties.
D). element.classList.add('hidden');
What is the advantage of using CSS classes to hide HTML elements compared to inline styles in JavaScript?
A). Inline styles provide more flexibility in hiding elements.
B). CSS classes allow for better separation of concerns and reusability.
C). Inline styles offer better performance in hiding elements.
D). CSS classes increase code complexity and maintenance.