nodeJS save post request of inputboxes in a file

Question

var input = '';
for (i = 0; i < array.length; i++) {
  input += <input name=line_"+i+ " type=text >"+"\n";
}

This cycle create HTML input boxes depending on the length of an array and saves these in the string "input". For each of them I assign the name "line_" and the number of index i, for example the name of first will be line_0, the second line_1 etc.

if (req.url == '/postContent') {
  var body = '';

  req.on('data', function(data) {
    body += data;
  });
  req.on('end', function() {
    var post = qs.parse(body);

    for (i = 0; i < array.length; i++) {
      fs.appendFile(databaseFile, "line" + i + ": " + post.line_ + "[" + i + "]" + "\n");
    }
    res.writeHead(302, {
      'Location': '/'
    });
    res.end();
  });

Now when there is a post request in one of the input boxes I want to save this in a file. I try to write post.line_+"["+i+"] but the program does not find the name of input boxes in fact the result is this:

riga0: undefined[0]

How can I do to write post.line_i "i" in the sense of variable. thanks.

Answer 1

Did you try this?

post['line_' + i]