JavaScript和ActiveX控件交互
首先在本机通过regsvr32命令注册ActiveX控件，然后确保ActiveX控件能正确在IE中加载，IE7、IE8对安全控制得比较严，设置起来有点烦。
1. JavaScript调用ActiveX控件的示例代码：
2. JavaScript函数和ActiveX控件事件关联
1. JavaScript调用ActiveX控件的示例代码：
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>test</title>
</head>
<body>
<object id="ctl1" classid="clsid:A2B80A6E-42FA-4730-AEB2-B1FB38D2C8D1" width="100" height="50">
</object>
<script language="javascript">
document.getElementById("ctl1").sayHello();
</script>
</body>
</html>
说明：ActiveX控件的classid需要通过查找注册表获得，然后通过getElementById()方法获取对象后，就可以像调用普通的JS函数一样使用了<html xmlns="http://www.w3.org/1999/xhtml" >
<head>
<title>test</title>
</head>
<body>
<object id="ctl1" classid="clsid:A2B80A6E-42FA-4730-AEB2-B1FB38D2C8D1" width="100" height="50">
</object>
<script language="javascript">
document.getElementById("ctl1").sayHello();
</script>
</body>
</html>
2. JavaScript函数和ActiveX控件事件关联
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>test</title>
</head>
<body>
<script for="ctl1" language="JavaScript" event="receiveMessageEvent(nFlag)">
alert(nFlag);
</script>
<object id="ctl1" classid="clsid:A2B80A6E-42FA-4730-AEB2-B1FB38D2C8D1" width="100" height="50">
</object>
</body>
</html>
说明：JavaScript函数要和ActiveX控件的事件进行关联，获取事件的返回值，主要通过<script for="控件ID" event="事件函数" language="javascript">来声明，事件关联函数要放在ActiveX控件代码的上面，否则接收不到事件通知。<html xmlns="http://www.w3.org/1999/xhtml" >
<head runat="server">
<title>test</title>
</head>
<body>
<script for="ctl1" language="JavaScript" event="receiveMessageEvent(nFlag)">
alert(nFlag);
</script>
<object id="ctl1" classid="clsid:A2B80A6E-42FA-4730-AEB2-B1FB38D2C8D1" width="100" height="50">
</object>
</body>
</html>
