<input type="button"/> or
<input type="button" />
type="button" controls is never sent with a form when a form is submitted to the server; these button controls are for use only with script programs on the browser.
This is an empty element. In HTML, the end tag is forbidden. In XHTML, the element must be closed with a trailing slash as just shown. Developers may include a space character before the slash for backward compatibility with older browsers.
<input type="button" value="Push Me!" />