!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN""http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"html head title$F/title script type="text/javascript" language="javascript" src="prototype.js" /script script type="text/javascript" language="javascript" function test() { alert($F("userName")); } /script /head body form input type="text" id="userName" value="test username" input type="button" value="click" onclick="test()" /form/html...[ 查看全文 ]