The presence of the attribute in a tag will apply it to that HTML element. Value "get, post". The reference contains descriptions and examples of all Boolean properties and methods. Now, in this tutorial, We'll learn the basic tutorial of How to add an HTML button element. For example, if you use an attribute for a boolean setting, its presence means true regardless of the value, and its absence means false. When present, it specifies Check the example below. For example, you could embed a music video on your web page for your visitors to listen to and watch. The absence of the attribute defaults the attribute to false. Boolean attribute that indicates that the element is to be made inert. You must specify the type for the