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

不能让它在Chrome上工作,只是通过改变CSS,因为我不想让页面滚动回顶部。这很有效:

$("#myModal").on("show.bs.modal", function () {
  var top = $("body").scrollTop(); $("body").css('position','fixed').css('overflow','hidden').css('top',-top).css('width','100%').css('height',top+5000);
}).on("hide.bs.modal", function () {
  var top = $("body").position().top; $("body").css('position','relative').css('overflow','auto').css('top',0).scrollTop(-top);
});

其他回答

大部分的片段都在这里,但我没有看到任何答案把它们放在一起。

这个问题有三个方面。

(1)防止底层页面滚动

$('body').css('overflow', 'hidden')

(2)并移除滚动条

var handler = function (e) { e.preventDefault() }
$('.modal').bind('mousewheel touchmove', handler)

(3)模态解散时进行清理

$('.modal').unbind('mousewheel touchmove', handler)
$('body').css('overflow', '')

如果模式不是全屏,那么将.modal绑定应用到全屏覆盖。

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

/* =============================
 * 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(); });
});

因为对我来说,这个问题主要出现在iOS上,所以我提供了只在iOS上修复的代码:

  if(!!navigator.platform && /iPad|iPhone|iPod/.test(navigator.platform)) {
    var $modalRep    = $('#modal-id'),
        startScrollY = null, 
        moveDiv;  

    $modalRep.on('touchmove', function(ev) {
      ev.preventDefault();
      moveDiv = startScrollY - ev.touches[0].clientY;
      startScrollY = ev.touches[0].clientY;
      var el = $(ev.target).parents('#div-that-scrolls');
      // #div-that-scrolls is a child of #modal-id
      el.scrollTop(el.scrollTop() + moveDiv);
    });

    $modalRep.on('touchstart', function(ev) {
      startScrollY = ev.touches[0].clientY;
    });
  }

为我工作

$('#myModal').on({'mousewheel': function(e) 
    {
    if (e.target.id == 'el') return;
    e.preventDefault();
    e.stopPropagation();
   }
});