In HTML, both Id and Class are the element selector and are used to identify an element based on the name assign to these parameters. ID and Class selectors are the most widely used element selectors in CSS (HTML). The basic difference between ID and Class is that the ID selector is applied only to one element in a page, whereas the class selector can be applied to several elements on a single page.
Read this article to find out more about "id" and "class" in HTML and how they are different from each other.
