rename mutli images use nodejs

rename.js

var fs = require('fs');
var path = require('path');
var dir = '/Users/jiangmu/Downloads/花花/';

fs.readdir(dir, function (err, files) {
  if (err) {
    console.log(err);
    return;
  }

  var count = files.length;
  var results = {};
  files.forEach(function (file) {
    var info = path.parse(file);
    var rname = '[' + info.name + ']' +info.ext;
    fs.rename(dir + file, dir + rname);
  });
});