@NemoAlex @Phariel 不要试图污染 window 除非你是一个框架级的东西

// app.js
// ------

(function() {

  require(['router'], function(router) {

    var app = {

      initialize: function() {
        this.bindEvents();
      },

      bindEvents: function() {
        window.onload = this.onDeviceReady();
      },

      onDeviceReady: function() {
        main.receivedEvent('deviceready');
      },

      receivedEvent: function(event) {
        switch (event) {
          case 'deviceready':
            app.initMian();
            break;
        }
      },

      initMian: function() {

        // 不用 window 如何把这货在别的 .js 里可用？
        window.db = openDatabase('db', '1.0', 'description', 10240);

        window.$ = jQuery;

      }

    };

    app.initialize();

  });

})();