filestorage

gistfile1.js

var storage = {
  init: function (success, error) {
    window.requestFileSystem(PERSISTENT, 100 * 1024 * 1024, success, error);
  },

  write: function (fileName, content, success, error) {
    this.init(function (fs) {
      fs.root.getFile(fileName, { create: true }, function (fileEntry) {
        fileEntry.createWriter(function (fileWriter) {
          fileWriter.onwriteend = callback;
          fileWriter.onerror = error;
          fileWriter.write(content);
        }, error);
      }, error);
    }, error);
  },
  
  read: function (fileName, callback, error) {
    this.init(function (fs) {
      fs.root.getFile(fileName, {}, function (fileEntry) {
        fileEntry.file(function (file) {
          var reader = new FileReader();
          reader.onloadend = function (e) {
            callback(this.result);
          };
          reader.onerror = error;
          reader.readAsText(file);
        }, error);
      }, error);
    }, error);
  },

  remove: function (fileName, success, error) {
    this.init(function (fs) {
      fs.root.getFile(fileName, { create: false }, function (fileEntry) {
        fileEntry.remove(success, error);
      }, error);
    }, error);
  }
};