Showing tab bar with javascript in Onsen UI -


i able hide tab bar when pushing new page. while coming main screen, not able show tab bar again script if press device button.

please help. following code : 

 module.run(function($rootscope){     $rootscope.incremental = 0;       document.addeventlistener("backbutton", onbackkeydown, false);      function onbackkeydown() {         // handle button         if ($rootscope.home.getpages().length > 1) {             $rootscope.hide = 'false';             $rootscope.home.poppage();             e.preventdefault();         } else {                 $rootscope.incremental++;                  if($rootscope.incremental == 1){                     ons.notification.confirm({                         message: 'are sure want exit?',                         title: 'exit app?',                         buttonlabels: ['yes', 'no'],                         cancelable: true,                         callback: function(index) {                             if(index == 0){                                 navigator.app.exitapp();                                 } else {                                 $rootscope.incremental = 0;                                 e.preventdefault();                             }                         }                                             });                     e.preventdefault();                 } else {                     e.preventdefault();                 }             }     }  });  <ons-tabbar animation="fade" hide-tabs="{{$root.hide}}">         <ons-tab active="true" page="index.html">             <div class="tab">                 <ons-icon icon="ion-home" class="tab-icon"></ons-icon>                 <div class="tab-label">home</div>             </div>         </ons-tab>         <ons-tab page="about.html">             <div class="tab">                 <ons-icon icon="ion-information-circled" class="tab-icon"></ons-icon>                 <div class="tab-label">about app</div>             </div>         </ons-tab>     </ons-tabbar>

in corresponding controller can show again right ? have add show again inside controller , outside function. when click function again hide. when come show


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