Не может стрелять («прокручивать») событие в Jquery

Question

Я пытаюсь вызвать функцию, когда событие прокрутки срабатывает и это код, который я использовал:

$(window).on('scroll', function(){ 
     alert("Scroll event is triggered."); 
}); 

Проблема заключается в том, когда я прокручиваю окно, ничего не происходит, но когда я изменить событие «нажмите» или «изменить размер», приведенный выше код работает просто отлично:

$(window).on('click', function(){ 
     alert("The page was clicked."); 
    }); 

$(window).on('resize', function(){ 
     alert("The window was resized."); 
    }); 

Так почему «Клик» и «размер» события работали и «свитка «Не так ли? Я попробовал

$(window).scroll(function(){ 
    alert("Scroll event is triggered."); 
}); 

И он тоже не работал. Я что-то пропустил?

Благодаря

Answer 1

Убедитесь, что вы выслать ему библиотеку Jquery и использовать вам код, когда документ будет готов

$(function(){ 
 
    $(window).scroll(function(){ 
 
    console.log('scrolling ') 
 
    }); 
 
});

<script src="https://ajax.googleapis.com/ajax/libs/jquery/1.9.1/jquery.min.js"></script> 
 

 

 
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Answer 2

кажется, что проблема не в коде, но скорее, в браузере. Поэтому, когда я очищаю данные просмотра, код работает нормально.

Спасибо, ребята.