title: Backbone js fetch always invoked error func. Emergency ask ~
body: <p>There is a problem puzzles me several days. i'm gotta crazy~ My codes is below here~ </p>
  
  <pre><code>// 
  // Index
  // ------
  // Main controller for the application - orchestrates sub-views.
  vpn.routers.Index = Backbone.Router.extend({
  
    routes : {
      "/": "index"
    },
  
    // Initializes the workspace, binding it to &lt;body&gt;.
    initialize : function() {
      _.bindAll(this, 'index');
    },
  
    //
    // Index View
    // ----------
    // The index page for the application
    //
    index : function() {
  
    }
  
  });
  
  $(document).ready(function() {
    // 
    // Wire up all the controllers when the document
    // has loaded.
    //
  
      vpn.app.ui.UserLogin = new vpn.view.UserLogin();
      vpn.app.ui.UserData = new vpn.view.UserData();
  
      vpn.app.data.Account.fetch({
          success: function(data){
  //          alert(data.get('user').username)
              if(data.get("status") == "200") {
                  vpn.app.data.UserData.fetch({
                      success: function() {
                          // render the container
                          vpn.app.ui.UserData.render();
                          // render the header
                          vpn.app.ui.HeaderBar.toRate();
                      }
                  });
              } else {
                  vpn.app.ui.UserLogin.render();
              }
          },
          error: function(data) {
              alert(typeof(data));
              alert("stupid IE！in index.js");
          }
      });
  
      vpn.app.router.Base = new vpn.routers.Base();
      vpn.app.router.Index = new vpn.routers.Index();
  
      // Start the history
      Backbone.history.start();
  
  });
  </code></pre>
  
  <p>When i run my HTML page in IE8, the model fetch always invoked the error func.<br/>
  it return alert("stupid IE！in index.js") ~<br/>
  But the same codes worked very well with FF, Chrome. i really really dont know why !<br/>
  In the background program with Python, i return a data which datatype is JSON.<br/>
  I really need a hand ! Thanks :) ~<br/></p>
  
  <blockquote>
    <p>In the FF, the request is success ↓↓↓↓.</p>
  </blockquote>
  
  <p><code>{"status": "200", "user": {"username": "ser", "quota_cycle": 30, "site_password": "698d51a19d8a121ce581499d7b701668", "name": "", "creation": "2011-12-30 00:00:00", "enabled": true, "site": "http://shuen.blog.com/", "email": "dbdhpy@gmail.com", "note": null, "quota_bytes": 10737418240, "active": true, "password": null, "id": 2}}</code></p>
  
  <blockquote>
    <p>And this is the JSON ↓↓↓↓.</p>
  </blockquote>
  
  <p><code>status "200"<br>
  user Object { username="ser", quota_cycle=30,site_password="698d51a19d8a121ce581499d7b701668", more...}</code></p>