Learn how to create radio buttons in HTML forms with examples and tips. Find out how to group, style, preselect, and use JavaScript with radio buttons. HTML Radio Button Code This page contains HTML radio button code. You can copy/paste this code into your own blog or website in order to create radio buttons. A radio button is a form element that allows the user to select one option from a range of options. Radio buttons are created with the HTML tag. In this article, we will learn how to add Radio Buttons in form using HTML. We know that Radio Buttons are used to select only one option out of several options. HTML is used to define a radio button, where only one option in a group can be selected at a time. Buttons in the same group have the same name attribute, so selecting one automatically deselects the others. Multiple radio button groups can exist with different names.