Html5 input type radio checked

The input element with a type attribute whose value is " radio " represents a selection of one item from a list of items a radio button. The input element is a void element. An input element must have a start tag but must not have an end tag.

Permitted contents empty void element. Additional constraints and admonitions The interactive element input must not appear as a descendant of the a element. The interactive element input must not appear as a descendant of the button element.

Any input element descendant of a label element with a for attribute must have an ID value that matches that for attribute. The usemap attribute on the input element is obsolete.

jquery - Checkbox / radio is checked="checked" in HTML but it looks like unchecked - Stack Overflow

Use the img element instead of the input element for image maps. The align attribute on the input element is obsolete.

HTML DOM Input Radio disabled Property

Tag omission The input element is a void element. Permitted parent elements any element that can contain phrasing elements. DOM interface interface HTMLInputElement: