Button on click event
<HTML> <BODY> <A HREF="http://www.java2s.com" onMouseOver="window.alert('over!');">Java2s!</A> <P> <FORM> Phone Number: <INPUT type="text" size="25" onFocus="window.alert('on focus');"> <BR> Name: <INPUT type="text" size="25" onBlur="window.alert('focus lost');"> <BR> E-mail Address: <INPUT type="text" size="25"> <P> <INPUT type="button" value="Click Here." onClick="window.alert('on click')";> </FORM> </BODY> </HTML>