javascript - Function inside setTimeout doesn't modify $scope variables / CSS properties -

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i'm battling settimeout(), unable grasp problem be. first thought scope problem can't fix it.

i'd delay hiding/unhiding of div let css transition on opacity kick in when click alert_button fade hide alert, fades , i'm left invisible div. delayed $scope.alert_token doesn't switch 'true' , opacity of alert stuck on 1.

app.js : 

angular.module('myapp', []) .controller('myctrl', function($scope) {     $scope.alert_token = true // hide if true     $scope.alert_message = ""     $scope.p_name = ""      $scope.isinarray = function(arr, item) {         // if item in array         if (arr.indexof(item) > -1) {             $scope.alert_token = !$scope.alert_token             $scope.alert_message = "entry exists"             settimeout(function() {                 document.getelementbyid("alert").style.opacity = "1"             }, 305)         }         else ...     }      $scope.submit = function(listtype) {         if (listtype == "player") {             $scope.isinarray(p_list, $scope.p_name)             $scope.p_name = ""         }         else ...     }      $scope.closealert = function() {         document.getelementbyid("alert").style.opacity = "0"         settimeout(function() {             $scope.alert_token = !$scope.alert_token         }, 305)     }

anything happening outside angular's knowledge not updated dom. in case settimeout. instead use $timeout.

...... .controller('myctrl', function($scope, $timeout) {...                                        ^^^^^^^^ //other code ....    $scope.closealert = function() {         document.getelementbyid("alert").style.opacity = "0"         $timeout(function() {//$timeout             $scope.alert_token = !$scope.alert_token         }, 305)     }

also since using angularjs, update css properties recommend use ngclass , ngstyle


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