如何同步两个div的滚动位置？

I want to have 2 divs sized to a particular width (i.e. 500px). One above the other aligned horizontally.

我希望有2个div大小到特定宽度（即500px）。一个在另一个之上水平对齐。

The top box should hide its scroll bar, the bottom should show a scroll bar and when the user scrolls I'd like the offset of the top box to change to the value of the bottom box. So that when the bottom DIV scrolls horizontally it appears that the top DIV is also scrolling in unison.

顶部框应隐藏其滚动条，底部应显示滚动条，当用户滚动时，我希望顶部框的偏移更改为底部框的值。因此，当底部DIV水平滚动时，顶部DIV也会同时滚动。

I'm happy to do this in Jquery if it makes the process easier.

如果它让这个过程更容易，我很高兴在Jquery中这样做。

4 个解决方案

#1

$('#bottom').on('scroll', function () {
    $('#top').scrollTop($(this).scrollTop());
});

Here we are using .scrollTop() for all it's worth, getting the scrollTop value from the element with scroll-bars, and setting the scrollTop for the other element to sync their scroll positions: http://api.jquery.com/scrollTop

这里我们使用.scrollTop（）获取它的全部价值，从带有滚动条的元素获取scrollTop值，并为另一个元素设置scrollTop以同步它们的滚动位置：http：//api.jquery.com/scrollTop

This assumes that your bottom element has an ID of bottom and your top element has an ID of top.

这假设您的底部元素的ID为bottom，而您的top元素的ID为top。

You can hide the scroll-bars for the top element using CSS:

您可以使用CSS隐藏顶部元素的滚动条：

#top {
    overflow : hidden;
}

Here is a demo: http://jsfiddle.net/sgcer/1884/

这是一个演示：http：//jsfiddle.net/sgcer/1884/

I suppose I've never really had a reason to do this, but it looks pretty cool in action.

我想我从来没有真正有理由这样做，但它看起来很酷。

#2

I know this is an old thread, but maybe this will help someone. In case if you need to synchronize scrolling in double direction, it's not good enough to just handle both containers' scrolling events and set the scroll value, because then scrolling events are getting into cycle and the scrolling is not smooth (try to scroll vertically by a mouse wheel an example given by Hightom).

我知道这是一个老线程，但也许这会对某人有所帮助。如果你需要在双向同步滚动，那么仅仅处理两个容器的滚动事件并设置滚动值是不够的，因为滚动事件进入循环并且滚动不顺畅（尝试垂直滚动）一个鼠标轮，由Hightom给出的一个例子）。

Here is an example of how you can check if you are already synchronizing the scroll:

以下是如何检查是否已在同步滚动的示例：

var isSyncingLeftScroll = false;
var isSyncingRightScroll = false;
var leftDiv = document.getElementById('left');
var rightDiv = document.getElementById('right');

leftDiv.onscroll = function() {
  if (!isSyncingLeftScroll) {
    isSyncingRightScroll = true;
    rightDiv.scrollTop = this.scrollTop;
  }
  isSyncingLeftScroll = false;
}

rightDiv.onscroll = function() {
  if (!isSyncingRightScroll) {
    isSyncingLeftScroll = true;
    leftDiv.scrollTop = this.scrollTop;
  }
  isSyncingRightScroll = false;
}

.container {
  width: 200px;
  height: 500px;
  overflow-y: auto;
}

.leftContainer {
  float: left;
}

.rightContainer {
  float: right;
}

<div id="left" class="container leftContainer">
Sed ut perspiciatis, unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam eaque ipsa, quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt, explicabo. Nemo enim ipsam voluptatem, quia voluptas sit, aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos, qui ratione voluptatem sequi nesciunt, neque porro quisquam est, qui dolorem ipsum, quia dolor sit, amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt, ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit, qui in ea voluptate velit esse, quam nihil molestiae consequatur, vel illum, qui dolorem eum fugiat, quo voluptas nulla pariatur? At vero eos et accusamus et iusto odio dignissimos ducimus, qui blanditiis praesentium voluptatum deleniti atque corrupti, quos dolores et quas molestias excepturi sint, obcaecati cupiditate non provident, similique sunt in culpa, qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio, cumque nihil impedit, quo minus id, quod maxime placeat, facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet, ut et voluptates repudiandae sint et molestiae non recusandae. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
</div>
<div id="right" class="container rightContainer">
Sed ut perspiciatis, unde omnis iste natus error sit voluptatem accusantium doloremque laudantium, totam rem aperiam eaque ipsa, quae ab illo inventore veritatis et quasi architecto beatae vitae dicta sunt, explicabo. Nemo enim ipsam voluptatem, quia voluptas sit, aspernatur aut odit aut fugit, sed quia consequuntur magni dolores eos, qui ratione voluptatem sequi nesciunt, neque porro quisquam est, qui dolorem ipsum, quia dolor sit, amet, consectetur, adipisci velit, sed quia non numquam eius modi tempora incidunt, ut labore et dolore magnam aliquam quaerat voluptatem. Ut enim ad minima veniam, quis nostrum exercitationem ullam corporis suscipit laboriosam, nisi ut aliquid ex ea commodi consequatur? Quis autem vel eum iure reprehenderit, qui in ea voluptate velit esse, quam nihil molestiae consequatur, vel illum, qui dolorem eum fugiat, quo voluptas nulla pariatur? At vero eos et accusamus et iusto odio dignissimos ducimus, qui blanditiis praesentium voluptatum deleniti atque corrupti, quos dolores et quas molestias excepturi sint, obcaecati cupiditate non provident, similique sunt in culpa, qui officia deserunt mollitia animi, id est laborum et dolorum fuga. Et harum quidem rerum facilis est et expedita distinctio. Nam libero tempore, cum soluta nobis est eligendi optio, cumque nihil impedit, quo minus id, quod maxime placeat, facere possimus, omnis voluptas assumenda est, omnis dolor repellendus. Temporibus autem quibusdam et aut officiis debitis aut rerum necessitatibus saepe eveniet, ut et voluptates repudiandae sint et molestiae non recusandae. Itaque earum rerum hic tenetur a sapiente delectus, ut aut reiciendis voluptatibus maiores alias consequatur aut perferendis doloribus asperiores repellat.
</div>

Here is the fiddle.

这是小提琴。

#3

I've been looking for a double direction solution and thanks to you all, your contibutions helped me doing this :

我一直在寻找一个双向解决方案，谢谢大家，你的建议让我这样做：

$('#cells').on('scroll', function () {
$('#hours').scrollTop($(this).scrollTop());
$('#days').scrollLeft($(this).scrollLeft());});

See on JSFiddle : https://jsfiddle.net/sgcer/1274/

请参阅JSFiddle：https：//jsfiddle.net/sgcer/1274/

Hope it's help someone someday :-)

希望有一天能帮到某人:-)

#4

Thanks to the answers above, I made a mixed solution that works preferentially for me:

感谢上面的答案，我提出了一个优先为我工作的混合解决方案：

var isLeftScrollTopCalled = false;
$('#leftElement').scroll(function (e) {
    if (isRightScrollTopCalled) {
        return isRightScrollTopCalled = false;
    }

    $('#rightElement').scrollTop($(this).scrollTop());
    isLeftScrollTopCalled = true;
});

var isRightScrollTopCalled = false;
$('#rightElement').scroll(function (e) {
    if (isLeftScrollTopCalled) {
        return isLeftScrollTopCalled = false;
    }

    $('#leftElement').scrollTop($(this).scrollTop());
    isRightScrollTopCalled = true;
});

#1

$('#bottom').on('scroll', function () {
    $('#top').scrollTop($(this).scrollTop());
});