.lazy {
            display: block;
            width: 100%;
        }

<img class="lazy" data-src="resim_yolu">

    $(document).ready(function () {
        $(window).scroll(function () {
            $(".lazy").each(function () {
                if ($(this).offset().top < $(window).scrollTop() + $(window).height() + 100) {
                    $(this).attr("src", $(this).attr("data-src"));
                }
            });
        });
    });