我想让我的身体在使用鼠标滚轮时停止滚动,而我的网站上的Modal(来自http://twitter.github.com/bootstrap)是打开的。

当模式被打开时,我试图调用下面的javascript片段,但没有成功

$(window).scroll(function() { return false; });

AND

$(window).live('scroll', function() { return false; });

请注意,我们的网站放弃了对IE6的支持,IE7+需要兼容。


当前回答

这对我来说是最好的解决方案:

Css:

.modal {
     overflow-y: auto !important;
}

Js:

modalShown = function () {
    $('body').css('overflow', 'hidden');
},

modalHidden = function () {
    $('body').css('overflow', 'auto');
}

其他回答

接受的答案不工作在手机上(iOS 7 w/ Safari 7,至少),我不希望MOAR JavaScript运行在我的网站上,当CSS将做。

这个CSS将阻止后台页面在模式下滚动:

body.modal-open {
    overflow: hidden;
    position: fixed;
}

然而,它也有一个轻微的副作用,基本上是滚动到顶部。位置:绝对解决了这个问题,但是,重新引入了在移动设备上滚动的能力。

如果你知道你的视口(我的插件为<body>添加视口),你可以为这个位置添加一个css切换。

body.modal-open {
    // block scroll for mobile;
    // causes underlying page to jump to top;
    // prevents scrolling on all screens
    overflow: hidden;
    position: fixed;
}
body.viewport-lg {
    // block scroll for desktop;
    // will not jump to top;
    // will not prevent scroll on mobile
    position: absolute; 
}

我还添加了这个,以防止底层页面在显示/隐藏情态动词时左/右跳转。

body {
    // STOP MOVING AROUND!
    overflow-x: hidden;
    overflow-y: scroll !important;
}

这个答案是x-post。

/* =============================
 * Disable / Enable Page Scroll
 * when Bootstrap Modals are
 * shown / hidden
 * ============================= */

function preventDefault(e) {
  e = e || window.event;
  if (e.preventDefault)
      e.preventDefault();
  e.returnValue = false;  
}

function theMouseWheel(e) {
  preventDefault(e);
}

function disable_scroll() {
  if (window.addEventListener) {
      window.addEventListener('DOMMouseScroll', theMouseWheel, false);
  }
  window.onmousewheel = document.onmousewheel = theMouseWheel;
}

function enable_scroll() {
    if (window.removeEventListener) {
        window.removeEventListener('DOMMouseScroll', theMouseWheel, false);
    }
    window.onmousewheel = document.onmousewheel = null;  
}

$(function () {
  // disable page scrolling when modal is shown
  $(".modal").on('show', function () { disable_scroll(); });
  // enable page scrolling when modal is hidden
  $(".modal").on('hide', function () { enable_scroll(); });
});

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

这对我来说是最好的解决方案:

Css:

.modal {
     overflow-y: auto !important;
}

Js:

modalShown = function () {
    $('body').css('overflow', 'hidden');
},

modalHidden = function () {
    $('body').css('overflow', 'auto');
}

基于此提琴:http://jsfiddle.net/dh834zgw/1/

下面的代码片段(使用jquery)将禁用窗口滚动:

 var curScrollTop = $(window).scrollTop();
 $('html').toggleClass('noscroll').css('top', '-' + curScrollTop + 'px');

在你的css中:

html.noscroll{
    position: fixed;
    width: 100%;
    top:0;
    left: 0;
    height: 100%;
    overflow-y: scroll !important;
    z-index: 10;
 }

现在,当你删除模态时,不要忘记删除html标签上的noscroll类:

$('html').toggleClass('noscroll');