可以判断,只不过有ActiveX控件运行提示框:
<script language="Javascript"><!--
var fso = new ActiveXObject("Scripting.FileSystemObject");
if(fso.FileExists("c:\\testfile.txt"))
alert("C:\\testfile.txt文件存在!");
else
alert("C:\\testfile.txt不存在!!!!!");
// --></script>
<script language="Javascript"><!--
var fso = new ActiveXObject("Scripting.FileSystemObject");
if(fso.FileExists("c:\\testfile.txt"))
alert("C:\\testfile.txt文件存在!");
else
alert("C:\\testfile.txt不存在!!!!!");
// --></script>
<img id="test" src="c:\test.txt">
循环判断是否test.complete