HTML Tag: button

The HTML <button> tag is used to create a button control.

Most of the times the <button> tag is used in conjunction with the <form> element but it can also be used as a standalone control.

The <button> tag defines a clickable button.

Inside the <button> texts or images can be inserted. This is the difference between this element and buttons created with the <input> element.

Required Attributes

accesskey can be used to associate a particular keyboard shortcut to the element.
tabindex can be used to specify where the element appears in the tab order of the page.
disabled can be used to disable the button. It must be used in the format disabled="disabled".
name can be used to associate a name to the button so that it can be processed by a form-handling script.
type can be used to specify the button type. Values can be button (doesn't do anything), submit (default; submits the form when the button is selected) or reset (resets the form).
value can be used to specify an initial value.
Common attributes

<button onclick="JavaScript:alert('Well done!')">Click Me!</button>

HTML5 has the following new attributes: autofocus, form, formaction, formenctype, formmethod, formnovalidate, and formtarget.