javascript - If array size is more than 0 then only push data -

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i toggling div on ng-click using isvisible. problem having everytime click button, runs $scope.objectlist.push(data);. want push on first click or push if array size less or equal 0.

$scope.objectlist = []; $scope.isvisible = false; $scope.pushdata= function(id) {     $http.get("some variables being passed on here").success(function(data, status, headers, config){             $scope.objectlist.push(data);     }).error(function(data, status, headers, config){         alert("error");     });     $scope.isvisible = ! $scope.isvisible; };

i have tried using if(objectlist.length <= 0) returned null array meaning nothing got pushed.

i don't think want use counter or boolean variable this. imagine set counter 1 or boolean variable "true" , other function you'll add later removes elements array. have empty array requires pushing, counter says it's not 0 , boolean variable says pushed array. wrong think should check array length directly this.

$scope.objectlist = []; $scope.isvisible = false; $scope.pushdata= function(id) {     $http.get("some variables being passed on here").success(function(data, status, headers, config) {         if ($scope.objectlist.length === 0) {               $scope.objectlist.push(data); /* push if array empty */         }     }).error(function(data, status, headers, config){         alert("error");     });     $scope.isvisible = ! $scope.isvisible; };

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