问jQuery无限滚动的替代方案

EN

$(window).scroll(function () { 
   if ($(window).scrollTop() >= $(document).height() - $(window).height() - 100) {
      //Add something at the end of the page
   }
});

var scrollListener = function () {
    $(window).one("scroll", function () { //unbinds itself every time it fires
        if ($(window).scrollTop() >= $(document).height() - $(window).height() - 100) {
            //Add something at the end of the page
        }
        setTimeout(scrollListener, 200); //rebinds itself after 200ms
    });
};
$(document).ready(function () {
    scrollListener();
});

function watchScrollPosition(callback, distance, interval) {
    var $window = $(window),
        $document = $(document);

    var checkScrollPosition = function() {
        var top = $document.height() - $window.height() - distance;

        if ($window.scrollTop() >= top) {
            callback();
        }
    };

    setInterval(checkScrollPosition, interval);
}