var fileobject = new ActiveXObject("Scripting.FileSystemObject");
var physicalPath = Server.MapPath("exercises.txt");
Response.write(physicalPath);
var filehandle=fileobject.openTextFile(physicalPath,1);
例如上面的这段代码的filehandle=fileobject.openTextFile(physicalPath,1)是什么,我不明白其中的1是什么?