<script> : script statements
The SCRIPT element places a script within a document. This element may appear any number of times in the HEAD or BODY of an HTML document.
This attribute specifies the location of an external script.
Deprecated. This attribute specifies the scripting language of the contents of this element. Its value is an identifier for the language, but since these identifiers are not standard, this attribute has been deprecated in favor of type.
<button onclick="f_alert()"> push me </button>