Mscomm--熟悉的看过来---紧急!
想把mscomm插在页面上,是不是只有javascrip等客户端脚本才能操作?
有谁实现过的,给个例子,谢谢了
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我写的,如下:
<script language="javascript">
var timer=null;
var comm = null;
var i=0;
function InitActiveX()
{
try
{
if(!(comm = new ActiveXObject("MSCommLib.MSComm")))
throw "MSCOMMLib.MSComm";
}
catch(e)
{
try
{
if(!(comm = new ActiveXObject("MSCommLib.MSComm.1")))
throw "MSCOMMLib.MSComm.1";
}
catch(e)
{
alert("Error: Install the "+e+" ActivX ");
}
}
if(comm)
{
comm.CommPort = 4;
comm.Settings = "9600,N,8,1";
comm.InputMode=1;
comm.SThreshold=8;
comm.PortOpen = true;
}
}
function PortRead()
{
var byin;
byin=comm.Input;
alert("ICNo:"+byin);
}
function ClosePort()
{
if (comm.PortOpen)
{
comm.PortOpen=false;
}
else
{
alert("Port is not open")
}
}
function read()
{
alert("good");
}
</script>
<script type="text/javascript" for=comm event=Comm> //OnComm事件,是不是定义不对??
return PortRead();
</script>
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有些人说就是不能触发OnComm事件,不知道是不是真的??
我加了个点击按钮,在刷卡后(我串口是个刷卡机),调用PortRead(),但也是读不着啊??