Question

Complete the JavaScript code to add the urgent class to the paragraph and remove the first class. const helloElem = document.querySelector("#helloMessage"); /* Your solution goes here */

Answer 1

To modify the element's classes, you use helloElem.classList.add('urgent') to add the 'urgent' class and helloElem.classList.remove('first') to remove the 'first' class, using the classList property.

Step-by-step explanation:

To complete the JavaScript code to add the urgent class to the paragraph and remove the first class, you can use the classList property. This property provides methods to add, remove, and toggle CSS classes on an element. Here is how you can modify the helloElem:

helloElem.classList.add('urgent');
helloElem.classList.remove('first');

The add method is used to add a new class to the class list, and remove method is used to remove an existing class from the list. This will ensure that the element with the id helloMessage will now have the urgent class and no longer have the first class.