滚动div元素时阻止页面滚动

Question

我已经在接受的答案中找到了解决方案:

滚动DIV元素时如何防止页面滚动？

但是也想要禁用在键上滚动主页面(当div内容不能再滚动时).

我想尝试制作这样的东西,但它不起作用:

$( '.div-scroll' ).bind( 'keydown mousewheel DOMMouseScroll', function ( e ) {
                var e0 = e.originalEvent,
                delta = e0.wheelDelta || -e0.detail;

                this.scrollTop += ( delta < 0 ? 1 : -1 ) * 30;

                if([32, 37, 38, 39, 40].indexOf(e.keyCode) > -1) {
                    e.preventDefault();
                }
                e.preventDefault();
            });

有什么想法吗？

Answer 1

您可以通过执行以下操作来停止滚动整个页面:

方法1

<div  onmouseover="document.body.style.overflow='hidden';"  onmouseout="document.body.style.overflow='auto';"></div>

但只要你将鼠标悬停在div上,它就会使浏览器的滚动条消失.

方法2

另外你可以看一下jquery-mousewheel.

var toolbox = $('#toolbox'),
    height = toolbox.height(),
    scrollHeight = toolbox.get(0).scrollHeight;

toolbox.off("mousewheel").on("mousewheel", function (event) {
  var blockScrolling = this.scrollTop === scrollHeight - height && event.deltaY < 0 || this.scrollTop === 0 && event.deltaY > 0;
  return !blockScrolling;
});

DEMO

方法3

在没有插件的情况下停止传播.

HTML

<div class="Scrollable">
  <!-- A bunch of HTML here which will create scrolling -->
</div>

JS

$('.Scrollable').on('DOMMouseScroll mousewheel', function(ev) {
    var $this = $(this),
        scrollTop = this.scrollTop,
        scrollHeight = this.scrollHeight,
        height = $this.height(),
        delta = (ev.type == 'DOMMouseScroll' ?
            ev.originalEvent.detail * -40 :
            ev.originalEvent.wheelDelta),
        up = delta > 0;

    var prevent = function() {
        ev.stopPropagation();
        ev.preventDefault();
        ev.returnValue = false;
        return false;
    }

    if (!up && -delta > scrollHeight - height - scrollTop) {
        // Scrolling down, but this will take us past the bottom.
        $this.scrollTop(scrollHeight);
        return prevent();
    } else if (up && delta > scrollTop) {
        // Scrolling up, but this will take us past the top.
        $this.scrollTop(0);
        return prevent();
    }
});

方法4

你可以通过取消这些互动事件来做到这一点:

鼠标和触摸滚动以及与滚动相关的按钮.

// left: 37, up: 38, right: 39, down: 40,
// spacebar: 32, pageup: 33, pagedown: 34, end: 35, home: 36
var keys = {37: 1, 38: 1, 39: 1, 40: 1};

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

function preventDefaultForScrollKeys(e) {
    if (keys[e.keyCode]) {
        preventDefault(e);
        return false;
    }
}

function disableScroll() {
  if (window.addEventListener) // older FF
      window.addEventListener('DOMMouseScroll', preventDefault, false);
  window.onwheel = preventDefault; // modern standard
  window.onmousewheel = document.onmousewheel = preventDefault; // older browsers, IE
  window.ontouchmove  = preventDefault; // mobile
  document.onkeydown  = preventDefaultForScrollKeys;
}

function enableScroll() {
    if (window.removeEventListener)
        window.removeEventListener('DOMMouseScroll', preventDefault, false);
    window.onmousewheel = document.onmousewheel = null; 
    window.onwheel = null; 
    window.ontouchmove = null;  
    document.onkeydown = null;  
}