Q
How can you hide an HTML element using JavaScript by applying an external CSS class?

Answer & Solution

Answer: Option C
Solution:
You can hide an HTML element using JavaScript by applying an external CSS class with hidden properties. For example, element.classList.add('hidden'); will apply the hidden properties defined in the external CSS class to hide the element.
Related Questions on Average

How can you hide an HTML element using JavaScript without directly modifying its style properties?

A). Use the setAttribute() method to set display: none;.

B). Use the setStyle() method to set visibility: hidden;.

C). Use the removeAttribute() method to remove the element from the DOM.

D). Use the toggle() method to toggle between visible and hidden states.

How can you hide an HTML element using JavaScript without directly modifying its CSS or inline styles?

A). Use the classList property to add a class with hidden properties.

B). Use the setAttribute() method to set display: none;.

C). Use the style property to set visibility: hidden;.

D). Use the toggle() method to toggle between visible and hidden states.

How can you hide an HTML element using JavaScript without modifying its CSS properties directly?

A). Use the setAttribute() method to set display: none;.

B). Use the setStyle() method to set visibility: hidden;.

C). Use the removeAttribute() method to remove the element from the DOM.

D). Use the toggle() method to toggle between visible and hidden states.

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';

What is the advantage of using the classList property to hide HTML elements compared to directly modifying CSS properties?

A). It allows for more granular control and better readability.

B). It provides better performance and faster execution.

C). It simplifies code structure and improves cross-browser compatibility.

D). It increases code complexity and maintenance.

How can you hide an HTML element using JavaScript by modifying its display property in an external CSS file?

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 hide an HTML element using JavaScript without affecting its layout position?

A). element.style.display = 'none';

B). element.style.visibility = 'hidden';

C). element.style.position = 'absolute';

D). element.style.opacity = '0';

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 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';

How can you hide an HTML element using JavaScript by toggling its visibility state?

A). element.style.display = 'none';

B). element.style.visibility = 'hidden';

C). element.style.visibility = 'toggle';

D). element.toggle('hidden');