试试下面的代码:

$('.entry_details').dialog({
    width:800,
    height:500,
    draggable: true,
    title: entry.short_description,
    closeText: "Zamknij",
    open: function(){
        //    blokowanie scrolla dla body
        var body_scroll = $(window).scrollTop();
        $(window).on('scroll', function(){
            $(document).scrollTop(body_scroll);
        });
    },
    close: function(){
        $(window).off('scroll');
    }
}); 

我有一个边栏，是由复选框黑客生成的。 但主要思想是保存文档scrollTop，而不是在滚动窗口期间更改它。

我只是不喜欢页面跳转时，身体变成'溢出:隐藏'。

window.addEventListener('load', function() { let prevScrollTop = 0; let isSidebarVisible = false; document.getElementById('f-overlay-chkbx').addEventListener('change', (event) => { prevScrollTop = window.pageYOffset || document.documentElement.scrollTop; isSidebarVisible = event.target.checked; window.addEventListener('scroll', (event) => { if (isSidebarVisible) { window.scrollTo(0, prevScrollTop); } }); }) });

我使用这个香草js函数添加“模态打开”类的身体。(根据smhmic的回答)

function freezeScroll(show, new_width)
{
    var innerWidth = window.innerWidth,
        clientWidth = document.documentElement.clientWidth,
        new_margin = ((show) ? (new_width + innerWidth - clientWidth) : new_width) + "px";

    document.body.style.marginRight = new_margin;
    document.body.className = (show) ? "modal-open" : "";
};

这招对我很管用:

$("#mymodal").mouseenter(function(){
   $("body").css("overflow", "hidden"); 
}).mouseleave(function(){
   $("body").css("overflow", "visible");
});

这个解决方案对我很有效:

var scrollDistance = 0; $(document).on("show.bs.modal", ".modal", function () { scrollDistance = $(window).scrollTop(); $("body").css("top", scrollDistance * -1); }); $(document).on("hidden.bs.modal", ".modal", function () { $("body").css("top", ""); $(window).scrollTop(scrollDistance); }); .content-area { height: 750px; background: grey; text-align: center; padding: 25px; font-weight:700; font-size: 30px; } body.modal-open { position: fixed; left: 0; width: 100%; } <link href="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/css/bootstrap.css" rel="stylesheet"/> <script src="https://code.jquery.com/jquery-3.4.1.slim.js"></script> <script src="https://cdnjs.cloudflare.com/ajax/libs/popper.js/1.16.0/umd/popper.js"></script> <script src="https://stackpath.bootstrapcdn.com/bootstrap/4.4.1/js/bootstrap.js"></script> <div class="content-area"> Scroll Down To Modal Button<br/> <svg xmlns="http://www.w3.org/2000/svg" width="56" height="56" fill="currentColor" class="bi bi-arrow-down" viewBox="0 0 16 16"> <path fill-rule="evenodd" d="M8 1a.5.5 0 0 1 .5.5v11.793l3.146-3.147a.5.5 0 0 1 .708.708l-4 4a.5.5 0 0 1-.708 0l-4-4a.5.5 0 0 1 .708-.708L7.5 13.293V1.5A.5.5 0 0 1 8 1z"/> </svg> </div> <center class="my-3"> <button type="button" class="btn btn-primary" data-toggle="modal" data-target="#exampleModal"> Launch demo modal </button> </center> <div class="content-area"></div> <!-- Modal --> <div class="modal fade" id="exampleModal" tabindex="-1" role="dialog" aria-labelledby="exampleModalLabel" aria-hidden="true"> <div class="modal-dialog" role="document"> <div class="modal-content"> <div class="modal-header"> <h5 class="modal-title" id="exampleModalLabel">Modal title</h5> <button type="button" class="close" data-dismiss="modal" aria-label="Close"> <span aria-hidden="true">&times;</span> </button> </div> <div class="modal-body"> <p>Cras mattis consectetur purus sit amet fermentum. Cras justo odio, dapibus ac facilisis in, egestas eget quam. Morbi leo risus, porta ac consectetur ac, vestibulum at eros.</p> <p>Praesent commodo cursus magna, vel scelerisque nisl consectetur et. Vivamus sagittis lacus vel augue laoreet rutrum faucibus dolor auctor.</p> </div> <div class="modal-footer"> <button type="button" class="btn btn-secondary" data-dismiss="modal">Close</button> <button type="button" class="btn btn-primary">Save changes</button> </div> </div> </div> </div>

基本上，当打开模态时，它会为主体添加一个负顶部，以在打开模态之前保持窗口滚动位置。关闭模态时，窗口滚动保持使用相同的值应用于顶部时，打开。 这种方法可以防止身体滚动。

这是一把能用的小提琴

我必须设置视口高度才能让它完美工作

body.modal-open {
  height: 100vh;
  overflow: hidden;
}