title: reset myApp into body by angular.bootstrap
body: <p>I have a problem. <br>
  I wants design multiple modules, each module will config route for itself. And before login I just wants load 3 modules (with 3 route), and after login I continue load 3 module (with 3 route). So I need re-config myApp to add new routes, then re-set into body to apply myApp.<br></p>
  
  <p>And my solution is: <br>
  I create mainModule is myApp, and i config for it then I set into body by angular.bootstrap</p>
  
  <pre><code>angular.element(document).ready(function() {
      angular.bootstrap(document.body, ["myApp"]);
  });
  </code></pre>
  
  <p>Then, I need re-config for myApp and I set again.</p>
  
  <pre><code>angular.element(document).ready(function() {
       angular.bootstrap(document.body, ["myApp"], true);
  });
  </code></pre>
  
  <p>An error occurs </p>
  
  <pre><code> [ng:btstrpd] App Already Bootstrapped with this Element '&amp;lt;body cz-shortcut-listen="true" class="ng-scope"&amp;gt;'(…)
  </code></pre>
  
  <p>How can I reset myApp into body or any solution ??? 
  Thanks,</p>