HTML5, CSS3, and JavaScript Fourth Edition

CHAPTER 14. JAVASCRIPT AND AJAX 155

14.7 Try It: Change the Class of an Element

If you want to change a whole bunch of styling all at once, one of the easiest
ways is to assign the styling to aclassand then just change the class of the
element.

Here is a JavaScript function we have namedreclassthat usesgetEle-
mentByIdandsetAttributeto change the class of an element. Place it
in your.

Here is a style sheet that defines two classes to be used in our example.
Place it in your.

Here is somecode to change the class of an item. We click on a

Here is an example of how to mark the paragraphs or images. Establish an
ID for the item that will be changed.

This paragraph changes style.