AngularJS控制器范围

Question

I have a controller:

appControllers.controller('MeetingListController', ['$scope', '$route', '$location', function($scope, $route, $location){
    console.log($scope.go);

    $scope.progressRun = function($event){
        $scope.go = true;
    };
});

I don't undersand because when go variable changes value in progressRun function, console.log doesn't show right value and it called before and after progressRun function.

Answer 1

Simply move your console.log() after you change the go variable in the progressRun() function...:

 appControllers.controller('MeetingListController', ['$scope', '$route', '$location', function($scope, $route, $location) {
    $scope.go = 'initial value you want to assign to this variable';

    $scope.progressRun = function($event) {
        $scope.go = true;
        console.log($scope.go);
    };

 }]);

UPDATE: If you want to log the variable value anytime it changes (even when it's value should be changed outside progressRun() function, use:

$scope.$watch('go', function() {
    console.log($scope.go);
});

Just after go variable initialization (as correctly @Shreevardhan suggestes).

Answer 2

Either log the value after changing

$scope.go = true;
console.log($scope.go);

Or, use $watch on the variable

$scope.$watch('go', function() {
    console.log($scope.go);
});

PS: $watch will log each time the value changes.