gistfile1.js

var fs = require('fs');
var sys = require('sys');

['surf_reg_model_both_inflate_high.obj',
 'surf_reg_model_both_inflate_low.obj',
 'surf_reg_model_both_inflate_middle.obj',
 'surf_reg_model_both_inflate_high.obj',
 'surf_reg_model_both_normal.obj'].forEach(function(filename) {
  
   fs.readFile(filename, 'utf-8', function(err, data) {
      var ans = new MNIObject(String(data));
      fs.writeFile(filename.split('.')[0] + '.json', 
                   JSON.stringify([ans.positionArray, ans.normalArray, ans.indexArray]), function() {
          sys.puts('done');
      });
  });
});