Get filename after filereader asynchronously loaded a file

Question

I am loading several files in a directory in order to parse some data from them. This works great so far, but I would like to know which file I am looking at. So I need the

Answer 1

The following source code add an attribute to the file reader

    for(i=0; i < files.length; i++)
    {
        var fileReader = new FileReader();
        fileReader.onload = function(file)
        {
              // DO what you need here
              // file name = file.target.fileName
        } // end of reader load
        fileReader.fileName = files[i].name;
        fileReader.readAsBinaryString(files[i]);
    }