问为什么当我在JS文件中写JS代码时，我的JS onscroll函数不起作用？

EN

   <script type="text/javascript" src="js/javascript.js"></script>

   <div class="col-sm-6" id="test" onscroll="scrollback()">
        <?php  $controller->getEvents(); ?>
   </div>

   $(document).ready(function () {

   var isCounting = false;

    function scrollback() {
        if (isCounting == false) {
            isCounting = true;
            setTimeout(
                function () {
                    document.getElementById("test").scrollTo({
                        top: 0,
                        left: 0
                    });
                    isCounting = false;
                }, 1000);
        }
    }

    }