Open all indd files from a folder and create a text box in each file.
var sourceFolder = Folder.selectDialog("select a folder");
var myFiles = sourceFolder.getFiles("*indd");
for(i=0; i<myFiles.length; i++)
{
app.open(myFiles[i]);
app.activeDocument.pages[0].textFrames.add(); // can we another variable instead of activeDocument something like app.myFiles[i].pages[0].textFrames.add();
}
