There are how many types of attributes in html?

Question

Attributes like Global Attributes.

Answer 1

HTML attributes are generally classified as required attributes, optional attributes, standard attributes, and event attributes: Usually the required and optional attributes modify specific HTML elements. While the standard attributes can be applied to most HTML elements.

Answer 2

There are many you can see here.
https://developer.mozilla.org/en-US/docs/Web/HTML/Attributes
https://developer.mozilla.org/en-US/docs/Web/HTML/Global_attributes