angular.module(‘app‘).directive(‘ScrollTrigger‘, () => {    return {      restrict: "A",      link:function ($scope,$element,$attrs,$controller) {        function debounce(fn, delay) {          let timer = null;          return function () {            let context = this;            let args = arguments;            clearTimeout(timer);            timer = setTimeout(function () {              fn.apply(context, args);            }, delay);          }        }        let trigger=debounce(() => {          if ($element.is(":hidden")) {            return;          }          if (($(window).scrollTop() + $(window).height()) > ($element.offset().top + 5)) {            if (!$scope.$eval($attrs.zScrollTrigger)) {              $element.trigger("click");            }          }        }, 100);        $(window).scroll(trigger);        $scope.$on("destroy",()=>{          $(window).unbind("scroll",trigger);        })      }    }  })