<script language="javascript">
var win=null;
win= window.open("span.html");
function isOpen()
{
try
{
win.document;
return true;
}
catch(ex)
{}
return false;
}
</script>
var win=null;
win= window.open("span.html");
function isOpen()
{
try
{
win.document;
return true;
}
catch(ex)
{}
return false;
}
</script>
var win=null;function openwin()
{
win= window.open("span.html");
}function isOpen()
{
try
{
win.document;
return true;
}
catch(ex)
{}
return false;
}
</script><input type="button" value="openwindow" onclick="openwin()">
<input type="button" value="check" onclick="alert(isOpen());">我试过了。无为的方法非常正确.我自己编的函数是这样的,但是不行.通过异常来判断窗口的关闭真是高手.
function isOpen()
{
if (win==null) return false;
else return true;
}
建议分全部给无为.