Convert jQuery Scroll-Code zu reinem Javascript

Question

Ich weiß gut jQuery aber mit reinem Javascript habe ich Probleme.

Können Sie mir helfen, jquery Code in das Javascript zu konvertieren. Danke :)

Hier ist mein Code.

var container = $('.container'); 

$(window).scroll(function(event) { 
    var scrollTop = $(window).scrollTop(); 
    var containerTop = container.position().top; 
    var containerHeight = container.outerHeight(); 
    var blockHeight = $('.game-block').height(); 
    var callPosition = (containerTop + containerHeight) - blockHeight; 

    if(scrollTop >= callPosition) { 
      //do ajax call 
    } 
}); 

Answer 1

var container = document.getElementByClassName('container'); 

window.addEventListener('scroll', function() { 
    var scrollTop = window.scrollY; 
    var containerTop = container.offsetTop; 
    var containerHeight = container.offsetHeight; 
    var blockHeight = document.getElementByClassName('game-block').clientHeight; 
    var callPosition = (containerTop + containerHeight) - blockHeight; 
});