Try this 
<!DOCTYPE html>
<html ng-app="myApp">
<head>
<script src="https://code.jquery.com/jquery-3.0.0.js";>
</script>
    
    <script 
src="https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css";></script>
    
<script 
src="https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"; 
 rel="stylesheet"></script>
    
<style> 
    li {color: orange; 
        background-color: black;
        padding: 5px;
        text-align: center;
       
    }
</style>
    
<script>
    var myApp= angular.module("myApp",[]);
    myApp.controller("myCtrl", function($scope){
        $scope.residents= [{fname:"John", lname:"Doe", age:25, 
alias:"Peter"},
                          {fname:"Joe", lname:"Mary", age:24, alias:"Paul"},
                          {fname:"Jay", lname:"Matthew", age:23, 
alias:"Pan"}]
    });
    $scope.show = false;
    $scope.counter=0;
</script>
    
</head>
<body>
<div class="container-fluid" ng-controller="myCtrl" >
    <ul>
    <li type="none" ng-repeat="resident in residents">{{resident.fname}} 
{{resident.lname}}, {{resident.age}}
 <span ng-show='show'>
 , {{resident.alias}}
      </span>
    </li>
    </ul>
    <br/>
    <button type="button" class="btn btn-info" ng-click="show = !show"> 
      <span ng-hide='show'>  Click to show pet names </span>
      <span ng-hide='!show'>  Click to hide pet names </span>
  </button>
    
    
</div>
</body> 

</html>

Vào 03:57:43 UTC+7 Thứ Ba, ngày 03 tháng 1 năm 2017, Swas Sehgal đã viết:
>
> <!DOCTYPE html>
> <html ng-app="myApp">
> <head>
> <script src="https://code.jquery.com/jquery-3.0.0.js";>
> </script>
>     
>     <script src="
> https://maxcdn.bootstrapcdn.com/bootstrap/3.3.6/css/bootstrap.min.css
> "></script>
>     
> <script src="
> https://ajax.googleapis.com/ajax/libs/angularjs/1.5.6/angular.min.js"; 
>  rel="stylesheet"></script>
>     
> <style> 
>     li {color: orange; 
>         background-color: black;
>         padding: 5px;
>         text-align: center;
>        
>     }
> </style>
>     
> <script>
>     var myApp= angular.module("myApp",[]);
>     myApp.controller("myCtrl", function($scope){
>         $scope.residents= [{fname:"John", lname:"Doe", age:25, 
> alias:"Peter"},
>                           {fname:"Joe", lname:"Mary", age:24, 
> alias:"Paul"},
>                           {fname:"Jay", lname:"Matthew", age:23, 
> alias:"Pan"}]
>     });
>     $scope.counter=0;
> </script>
>     
> </head>
> <body>
> <div class="container-fluid" ng-controller="myCtrl" >
>     <ul>
>     <li type="none" ng-repeat="resident in residents">{{resident.fname}} 
> {{resident.lname}}, {{resident.age}} </li>
>     </ul>
>     <br/>
>     <button type="button" class="btn btn-info" ng-click="fucn"> Click to 
> show pet names</button>
>     
>     
> </div>
> </body> 
>
> </html>
>

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