javascript - Bootstrap dropdown disappears after clicking it -

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<div class="container" ng-controller="servicehistorycontroller">     <!-- search box start -->     <div class="dropdown col-xs-8">           <button class="btn btn-default col-xs-4" id="dropdownmenu1" data-toggle="dropdown" aria-haspopup="false" aria-expanded="true">             select sut             <span class="caret"></span>           </button>           <ul class="dropdown-menu col-xs-8" aria-labelledby="dropdownmenu1">             <li ng-repeat="sutname in sutlist">                   <a href="#" ng-click="sutselected(sutname)">                       {{sutname.name}}                   </a>             </li>           </ul>     </div> </div>

above bootstrap + angular drop down code using. once clicked on dropdown disappeared. using angular1 + boostrap 3.3.7 , jquery 1.12.4 library. no other scripting or js used.

following angular function

app.controller("servicehistorycontroller",function($scope){         let menuitems = [{"sutid":"1","name":"aa"},                     {"sutid":"2","name":"bb"},                     {"sutid":"3","name":"cc"},                     {"sutid":"4","name":"dd"},                     {"sutid":"4","name":"ee"}]     $scope.sutlist = menuitems;     $scope.selectedsut;      $scope.sutselected = function(sutname){         $scope.selectedsut = sutname;         alert("dropdown sut selected:"+$scope.selectedsut.name);     }    });

the problem data type let use var see modified controller.

app.controller("servicehistorycontroller",function($scope){         var menuitems = [{"sutid":"1","name":"aa"},                     {"sutid":"2","name":"bb"},                     {"sutid":"3","name":"cc"},                     {"sutid":"4","name":"dd"},                     {"sutid":"4","name":"ee"}]     $scope.sutlist = menuitems;     $scope.selectedsut;      $scope.sutselected = function(sutname){         $scope.selectedsut = sutname;         alert("dropdown sut selected:"+$scope.selectedsut.name);     }    });

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