337

我有一个只有 300 像素大的 div,我希望它在页面加载时滚动到内容的底部。这个 div 有动态添加的内容,需要一直向下滚动。现在,如果用户决定向上滚动,我不希望它跳回底部,直到用户再次向下滚动

是否有可能让一个 div 保持滚动到底部,除非用户向上滚动并且当用户滚动回底部时,即使添加了新的动态内容,它也需要将自己保持在底部。我将如何去创造这个。

4

18 回答 18

398

我只能使用 CSS 来实现它。

诀窍是使用display: flex;flex-direction: column-reverse;

浏览器将底部视为顶部。假设您的目标浏览器 support flex-box,唯一需要注意的是标记必须以相反的顺序排列。

这是一个工作示例。https://codepen.io/jimbol/pen/YVJzBg

于 2017-05-18T15:04:04.023 回答
196

这可能会帮助您:

var element = document.getElementById("yourDivID");
element.scrollTop = element.scrollHeight;

[编辑],以匹配评论...

function updateScroll(){
    var element = document.getElementById("yourDivID");
    element.scrollTop = element.scrollHeight;
}

每当添加内容时,调用函数 updateScroll(),或设置一个计时器:

//once a second
setInterval(updateScroll,1000);

如果您只想在用户没有移动的情况下更新:

var scrolled = false;
function updateScroll(){
    if(!scrolled){
        var element = document.getElementById("yourDivID");
        element.scrollTop = element.scrollHeight;
    }
}

$("#yourDivID").on('scroll', function(){
    scrolled=true;
});
于 2013-09-04T12:59:42.117 回答
189

我刚刚实现了这个,也许你可以使用我的方法。

假设我们有以下 HTML:

<div id="out" style="overflow:auto"></div>

然后我们可以检查它是否滚动到底部:

var out = document.getElementById("out");
// allow 1px inaccuracy by adding 1
var isScrolledToBottom = out.scrollHeight - out.clientHeight <= out.scrollTop + 1;

scrollHeight为您提供元素的高度,包括由于溢出而导致的任何不可见区域。clientHeight为您提供 CSS 高度,或者以另一种方式说,元素的实际高度。两种方法都返回没有 的高度margin,因此您不必担心。scrollTop为您提供垂直滚动的位置。0 是顶部,最大值是元素的滚动高度减去元素本身的高度。使用滚动条时,很难(对我来说是在 Chrome 中)将滚动条一直向下移动到底部。所以我投入了 1px 的误差。isScrolledToBottom即使滚动条距离底部 1px 也是如此。您可以将其设置为适合您的任何内容。

然后只需将元素的 scrollTop 设置到底部即可。

if(isScrolledToBottom)
    out.scrollTop = out.scrollHeight - out.clientHeight;

我为你做了一个小提琴来展示这个概念:http: //jsfiddle.net/dotnetCarpenter/KpM5j/

编辑:添加了代码片段以阐明何时isScrolledToBottomtrue.

将滚动条粘贴到底部

const out = document.getElementById("out")
let c = 0

setInterval(function() {
    // allow 1px inaccuracy by adding 1
    const isScrolledToBottom = out.scrollHeight - out.clientHeight <= out.scrollTop + 1

    const newElement = document.createElement("div")

    newElement.textContent = format(c++, 'Bottom position:', out.scrollHeight - out.clientHeight,  'Scroll position:', out.scrollTop)

    out.appendChild(newElement)

    // scroll to bottom if isScrolledToBottom is true
    if (isScrolledToBottom) {
      out.scrollTop = out.scrollHeight - out.clientHeight
    }
}, 500)

function format () {
  return Array.prototype.slice.call(arguments).join(' ')
}
#out {
    height: 100px;
}
<div id="out" style="overflow:auto"></div>
<p>To be clear: We want the scrollbar to stick to the bottom if we have scrolled all the way down. If we scroll up, then we don't want the content to move.
</p>

于 2014-01-11T20:24:04.123 回答
42

2020 年可以使用css snap,但在 Chrome 81 之前布局更改不会触发 re-snap纯 css 聊天 ui可以在 Chrome 81 上运行,您也可以检查Can I use CSS snap

此演示将捕捉最后一个元素(如果可见),滚动到底部以查看效果。

.container {
  overflow-y: scroll;
  overscroll-behavior-y: contain;
  scroll-snap-type: y proximity;
}

.container > div > div:last-child {
  scroll-snap-align: end;
}

.container > div > div {
  background: lightgray;
  height: 3rem;
  font-size: 1.5rem;
}
.container > div > div:nth-child(2n) {
  background: gray;
}
<div class="container" style="height:6rem">
<div>
<div>1</div>
<div>2</div>
<div>3</div>
<div>4</div>
<div>5</div>
</div>
</div>

在此处输入图像描述

编辑

使用scroll-snap-type: y proximity;,向上滚动更容易。

于 2020-03-05T13:21:41.203 回答
34
$('#yourDiv').scrollTop($('#yourDiv')[0].scrollHeight);

现场演示:http: //jsfiddle.net/KGfG2/

于 2013-09-04T13:00:18.230 回答
17
$('#div1').scrollTop($('#div1')[0].scrollHeight);

Or animated:

$("#div1").animate({ scrollTop: $('#div1')[0].scrollHeight}, 1000);
于 2013-09-04T13:01:40.900 回答
14

.cont{
height: 100px;
overflow-x: hidden;
overflow-y: auto;
transform: rotate(180deg);
direction:rtl;
text-align:left;
}
ul{
overflow: hidden;
transform: rotate(180deg);
}
<div class="cont"> 
 <ul>
   <li>0</li>
   <li>1</li>
   <li>2</li>
   <li>3</li>
   <li>4</li>
   <li>5</li>
   <li>6</li>
   <li>7</li>
   <li>8</li>
   <li>9</li>
   <li>10</li>  
 </ul>
</div>

  1. Run code snippet看看效果。(PS:如果Run code snippet不工作,试试这个:https ://jsfiddle.net/Yeshen/xm2yLksu/3/ )

  2. 它是如何工作的:

默认溢出是从上到下滚动。

transform: rotate(180deg)可以让它从下到上滚动或加载动态块。

  1. 创见:

https://blog.csdn.net/yeshennet/article/details/88880252

于 2019-03-31T02:58:28.997 回答
4

这是基于Ryan Hunt 的博客文章的解决方案。它取决于overflow-anchorCSS 属性,它将滚动位置固定到滚动内容底部的元素。

function addMessage() {
  const $message = document.createElement('div');
  $message.className = 'message';
  $message.innerText = `Random number = ${Math.ceil(Math.random() * 1000)}`;
  $messages.insertBefore($message, $anchor);

  // Trigger the scroll pinning when the scroller overflows
  if (!overflowing) {
    overflowing = isOverflowing($scroller);
    $scroller.scrollTop = $scroller.scrollHeight;
  }
}

function isOverflowing($el) {
  return $el.scrollHeight > $el.clientHeight;
}

const $scroller = document.querySelector('.scroller');
const $messages = document.querySelector('.messages');
const $anchor = document.querySelector('.anchor');
let overflowing = false;

setInterval(addMessage, 1000);
.scroller {
  overflow: auto;
  height: 90vh;
  max-height: 11em;
  background: #555;
}

.messages > * {
  overflow-anchor: none;
}

.anchor {
  overflow-anchor: auto;
  height: 1px;
}

.message {
  margin: .3em;
  padding: .5em;
  background: #eee;
}
<section class="scroller">
  <div class="messages">
    <div class="anchor"></div>
  </div>
</section>

请注意,overflow-anchor目前在 Safari 中不起作用。

于 2019-07-23T15:11:06.000 回答
3
$('#yourDivID').animate({ scrollTop: $(document).height() }, "slow");
return false;

这将从#yourDivID使用该$(document).height()属性的高度计算 ScrollTop 位置,因此即使将动态内容添加到 div 滚动条也将始终位于底部位置。希望这可以帮助。但是它也有一个小错误,即使我们向上滚动并将鼠标指针从滚动条上移开,它也会自动到达底部位置。如果有人可以纠正这一点,那就太好了。

于 2015-02-15T11:32:23.777 回答
3

我无法得到前两个答案,其他答案都对我没有帮助。所以我从 Reddit r/forhireUpwork向三个人支付了 30 美元,得到了一些非常好的答案。这个答案应该可以为您节省 90 美元。



Justin Hundley / The Site Bros 的解决方案

HTML

<div id="chatscreen">
  <div id="inner">
  
  </div>
</div>

CSS

#chatscreen {
  width: 300px;
  overflow-y: scroll;
  max-height:100px;
}

Javascript

$(function(){
    var scrolled = false;
  var lastScroll = 0;
  var count = 0;
    $("#chatscreen").on("scroll", function() {
    var nextScroll = $(this).scrollTop();

    if (nextScroll <= lastScroll) {
        scrolled = true;
    }
    lastScroll = nextScroll;
    
    console.log(nextScroll, $("#inner").height())
    if ((nextScroll + 100) == $("#inner").height()) {
        scrolled = false;
    }
  });
 
  function updateScroll(){
      if(!scrolled){
          var element = document.getElementById("chatscreen");
          var inner = document.getElementById("inner");
          element.scrollTop = inner.scrollHeight;
      }
  }

  // Now let's load our messages
  function load_messages(){
      $( "#inner" ).append( "Test" + count + "<br/>" );
      count = count + 1;
      updateScroll();
  }

    setInterval(load_messages,300); 
});

预览网站兄弟的解决方案

文件夹



Lermex / Sviatoslav Chumakov 的解决方案

HTML

<div id="chatscreen">

</div>

CSS

#chatscreen {
  height: 300px;
  border: 1px solid purple;
  overflow: scroll;
}

Javascript

$(function(){
var isScrolledToBottom = false;
// Now let's load our messages
function load_messages(){
    $( "#chatscreen" ).append( "<br>Test" );
    updateScr();
}

var out = document.getElementById("chatscreen");
var c = 0;

$("#chatscreen").on('scroll', function(){
        console.log(out.scrollHeight);
    isScrolledToBottom = out.scrollHeight - out.clientHeight <= out.scrollTop + 10;
});

function updateScr() {
        // allow 1px inaccuracy by adding 1
    //console.log(out.scrollHeight - out.clientHeight,  out.scrollTop + 1);
    var newElement = document.createElement("div");

    newElement.innerHTML = c++;
    out.appendChild(newElement);
    
    console.log(isScrolledToBottom);

    // scroll to bottom if isScrolledToBotto
    if(isScrolledToBottom) {out.scrollTop = out.scrollHeight - out.clientHeight; }
}

var add = setInterval(updateScr, 1000);

setInterval(load_messages,300); // change to 300 to show the latest message you sent after pressing enter // comment this line and it works, uncomment and it fails
                                // leaving it on 1000 shows the second to last message
setInterval(updateScroll,30);
});

预览 Sviatoslav 的解决方案

文件夹



Igor Rusinov 的解决方案

HTML

<div id="chatscreen"></div>

CSS

#chatscreen {
  height: 100px;
  overflow: scroll;
  border: 1px solid #000;
}

Javascript

$(function(){

// Now let's load our messages
function load_messages(){
    $( "#chatscreen" ).append( "<br>Test" );
}

var out = document.getElementById("chatscreen");
var c = 0;
var add = setInterval(function() {
    // allow 1px inaccuracy by adding 1
    var isScrolledToBottom = out.scrollHeight - out.clientHeight <= out.scrollTop + 1;
    load_messages();

    // scroll to bottom if isScrolledToBotto
    if(isScrolledToBottom) {out.scrollTop = out.scrollHeight - out.clientHeight; }
}, 1000);
setInterval(updateScroll,30);
});

预览 Igor 的解决方案

文件夹

于 2020-12-10T06:14:50.023 回答
2
//Make sure message list is scrolled to the bottom
var container = $('#MessageWindowContent')[0];
var containerHeight = container.clientHeight;
var contentHeight = container.scrollHeight;

container.scrollTop = contentHeight - containerHeight;

这是我基于 dotnetCarpenter 的回答的版本。我的方法是纯 jQuery,我为变量命名以使事情更清晰。发生的情况是,如果内容高度大于容器,我们向下滚动额外的距离以获得所需的结果。

适用于 IE 和 chrome..

于 2016-02-19T14:49:38.643 回答
2

吉姆霍尔的答案是可取的,因为当你向上滚动时它确实不会滚动到底部,它也是纯 CSS。

然而,非常不幸的是,这不是一个稳定的解决方案:在 chrome 中(可能是由于上面 dotnetCarpenter 描述的 1-px 问题)scrollTop,即使没有用户交互(在添加元素时),其行为也会有 1 个像素的不准确。您可以设置scrollTop = scrollHeight - clientHeight,但是当添加另一个元素时,这将使 div 保持在原位,即“将自身保持在底部”功能不再起作用。

因此,简而言之,添加少量 Javascript(叹气)将解决此问题并满足所有要求:

https://codepen.io/anon/pen/pdrLEZ这样的东西(Coo 的例子),在向列表中添加一个元素之后,还有以下内容:

container = ...
if(container.scrollHeight - container.clientHeight - container.scrollTop <= 29) {
    container.scrollTop = container.scrollHeight - container.clientHeight;
}

其中 29 是一条线的高度。

因此,当用户向上滚动半行时(如果可能的话?),Javascript 将忽略它并滚动到底部。但我想这是可以忽略的。而且,它修复了 Chrome 1 px 的东西。

于 2018-09-27T07:21:36.700 回答
2

你可以使用这样的东西,

var element = document.getElementById("yourDivID");
window.scrollTo(0,element.offsetHeight);
于 2019-11-27T08:46:38.550 回答
1

以下是您需要的(我尽了最大努力,一路上进行了大量的谷歌搜索):

<html>
<head>
  <script>
    // no jquery, or other craziness. just
    // straight up vanilla javascript functions
    // to scroll a div's content to the bottom
    // if the user has not scrolled up.  Includes
    // a clickable "alert" for when "content" is
    // changed.

    // this should work for any kind of content
    // be it images, or links, or plain text
    // simply "append" the new element to the
    // div, and this will handle the rest as
    // proscribed.

    let scrolled = false; // at bottom?
    let scrolling = false; // scrolling in next msg?
    let listener = false; // does element have content changed listener?
    let contentChanged = false; // kind of obvious
    let alerted = false; // less obvious

    function innerHTMLChanged() {
      // this is here in case we want to
      // customize what goes on in here.
      // for now, just:
      contentChanged = true;
    }

    function scrollToBottom(id) {
      if (!id) { id = "scrollable_element"; }
      let DEBUG = 0; // change to 1 and open console
      let dstr = "";

      let e = document.getElementById(id);
      if (e) {
        if (!listener) {
          dstr += "content changed listener not active\n";
          e.addEventListener("DOMSubtreeModified", innerHTMLChanged);
          listener = true;
        } else {
          dstr += "content changed listener active\n";
        }
        let height = (e.scrollHeight - e.offsetHeight); // this isn't perfect
        let offset = (e.offsetHeight - e.clientHeight); // and does this fix it? seems to...
        let scrollMax = height + offset;

        dstr += "offsetHeight: " + e.offsetHeight + "\n";
        dstr += "clientHeight: " + e.clientHeight + "\n";
        dstr += "scrollHeight: " + e.scrollHeight + "\n";
        dstr += "scrollTop: " + e.scrollTop + "\n";
        dstr += "scrollMax: " + scrollMax + "\n";
        dstr += "offset: " + offset + "\n";
        dstr += "height: " + height + "\n";
        dstr += "contentChanged: " + contentChanged + "\n";

        if (!scrolled && !scrolling) {
          dstr += "user has not scrolled\n";
          if (e.scrollTop != scrollMax) {
            dstr += "scroll not at bottom\n";
            e.scroll({
              top: scrollMax,
              left: 0,
              behavior: "auto"
            })
            e.scrollTop = scrollMax;
            scrolling = true;
          } else {
            if (alerted) {
              dstr += "alert exists\n";
            } else {
              dstr += "alert does not exist\n";
            }
            if (contentChanged) { contentChanged = false; }
          }
        } else {
          dstr += "user scrolled away from bottom\n";
          if (!scrolling) {
            dstr += "not auto-scrolling\n";

            if (e.scrollTop >= scrollMax) {
              dstr += "scroll at bottom\n";
              scrolled = false;

              if (alerted) {
                dstr += "alert exists\n";
                let n = document.getElementById("alert");
                n.remove();
                alerted = false;
                contentChanged = false;
                scrolled = false;
              }
            } else {
              dstr += "scroll not at bottom\n";
              if (contentChanged) {
                dstr += "content changed\n";
                if (!alerted) {
                  dstr += "alert not displaying\n";
                  let n = document.createElement("div");
                  e.append(n);
                  n.id = "alert";
                  n.style.position = "absolute";
                  n.classList.add("normal-panel");
                  n.classList.add("clickable");
                  n.classList.add("blink");
                  n.innerHTML = "new content!";

                  let nposy = parseFloat(getComputedStyle(e).height) + 18;
                  let nposx = 18 + (parseFloat(getComputedStyle(e).width) / 2) - (parseFloat(getComputedStyle(n).width) / 2);
                  dstr += "nposx: " + nposx + "\n";
                  dstr += "nposy: " + nposy + "\n";
                  n.style.left = nposx;
                  n.style.top = nposy;

                  n.addEventListener("click", () => {
                    dstr += "clearing alert\n";
                    scrolled = false;
                    alerted = false;
                    contentChanged = false;
                    n.remove();
                  });

                  alerted = true;
                } else {
                  dstr += "alert already displayed\n";
                }
              } else {
                alerted = false;
              }
            }
          } else {
            dstr += "auto-scrolling\n";
            if (e.scrollTop >= scrollMax) {
              dstr += "done scrolling";
              scrolling = false;
              scrolled = false;
            } else {
              dstr += "still scrolling...\n";
            }
          }
        }
      }

      if (DEBUG && dstr) console.log("stb:\n" + dstr);

      setTimeout(() => { scrollToBottom(id); }, 50);
    }

    function scrollMessages(id) {
      if (!id) { id = "scrollable_element"; }
      let DEBUG = 1;
      let dstr = "";

      if (scrolled) {
        dstr += "already scrolled";
      } else {
        dstr += "got scrolled";
        scrolled = true;
      }
      dstr += "\n";

      if (contentChanged && alerted) {
        dstr += "content changed, and alerted\n";
        let n = document.getElementById("alert");
        if (n) {
          dstr += "alert div exists\n";
          let e = document.getElementById(id);
          let nposy = parseFloat(getComputedStyle(e).height) + 18;
          dstr += "nposy: " + nposy + "\n";
          n.style.top = nposy;
        } else {
          dstr += "alert div does not exist!\n";
        }
      } else {
        dstr += "content NOT changed, and not alerted";
      }

      if (DEBUG && dstr) console.log("sm: " + dstr);
    }

    setTimeout(() => { scrollToBottom("messages"); }, 1000);

    /////////////////////
    // HELPER FUNCTION
    //   simulates adding dynamic content to "chat" div
    let count = 0;
    function addContent() {
      let e = document.getElementById("messages");
      if (e) {
        let br = document.createElement("br");
        e.append("test " + count);
        e.append(br);
        count++;
      }
    }
  </script>

  <style>
    button {
      border-radius: 5px;
    }

    #container {
      padding: 5px;
    }

    #messages {
      background-color: blue;
      border: 1px inset black;
      border-radius: 3px;
      color: white;
      padding: 5px;
      overflow-x: none;
      overflow-y: auto;
      max-height: 100px;
      width: 100px;
      margin-bottom: 5px;
      text-align: left;
    }

    .bordered {
      border: 1px solid black;
      border-radius: 5px;
    }

    .inline-block {
      display: inline-block;
    }

    .centered {
      text-align: center;
    }

    .normal-panel {
      background-color: #888888;
      border: 1px solid black;
      border-radius: 5px;
      padding: 2px;
    }

    .clickable {
      cursor: pointer;
    }
  </style>
</head>
<body>
<div id="container" class="bordered inline-block centered">
  <div class="inline-block">My Chat</div>

  <div id="messages" onscroll="scrollMessages('messages')">
    test<br>
    test<br>
    test<br>
    test<br>
    test<br>
    test<br>
    test<br>
    test<br>
    test<br>
    test<br>
  </div>

  <button onclick="addContent();">Add Content</button>
</div>
</body>
</html>

注意:您可能需要同时调整警报位置(nposxnposy)以符合您的需要...scrollToBottomscrollMessages

还有一个链接到我自己的工作示例,托管在我的服务器上:https ://night-stand.ca/jaretts_tests/chat_scroll.html

于 2020-12-28T19:07:10.967 回答
1

基于曼哈顿先生的解决方案和评论。https://stackoverflow.com/a/18614545/9208887

我还添加了一个元素,flex 1 1 0%以确保文本在容器未满时从顶部开始。

// just to add some numbers, so we can see the effect
// the actual solution requires no javascript
let num = 1001;
const container = document.getElementById("scroll-container");
document.getElementById("adder").onclick = () =>
  container.append(
    Object.assign(document.createElement("div"), {
      textContent: num++
    })
  );
.scroll-wrapper {
  height: 100px;
  overflow: auto;
  display: flex;
  flex-direction: column-reverse;
  border: 1px solid black;
}

.scroll-start-at-top {
  flex: 1 1 0%;
}
<div class="scroll-wrapper">
  <span class="scroll-start-at-top"></span>
  <div id="scroll-container">
    <div>1000</div>
  </div>
</div>

<button id="adder">Add Text</button>

于 2022-01-23T22:24:13.813 回答
0

这是我的处理方式。我的 div 高度是 650 像素。我决定如果滚动高度在底部的 150px 范围内,则自动滚动它。否则,留给用户。

if (container_block.scrollHeight - container_block.scrollTop < 800) {
                    container_block.scrollTo(0, container_block.scrollHeight);
}
于 2019-08-30T02:15:11.370 回答
0

我设法让这个工作。诀窍是计算:(a)当前 div 用户滚动位置和(b)div 滚动高度,两者都在添加新元素之前。

如果 a === b,我们知道用户在添加新元素之前位于底部。

    let div = document.querySelector('div.scrollableBox');

    let span = document.createElement('span');
    span.textContent = 'Hello';

    let divCurrentUserScrollPosition = div.scrollTop + div.offsetHeight;
    let divScrollHeight = div.scrollHeight;

    // We have the current scroll positions saved in
    // variables, so now we can append the new element.
    div.append(span);

    
    if ((divScrollHeight === divCurrentUserScrollPosition)) {
        // Scroll to bottom of div
        div.scrollTo({ left: 0, top: div.scrollHeight });
    }
于 2021-01-24T00:18:09.123 回答
0

我试图对 Bootstrap 5 做同样的事情。我正在编写的页面是一个单窗口 html 工具,我希望两列具有可滚动的内容,并且一个需要反转,因为它是一个日志(另一个不太可能滚动,除非故意这样做)。列表和它们的标题也是底部锚定的,我很难让标题保持在弹性可滚动列表的顶部。

多亏了上面的例子,我可以弄清楚我缺少什么并获得正确的类类型来使其工作。

这是我的完整示例。在我的实际应用程序中,其他两列左侧有第三列,mh-100 col overflow-auto并且不需要内部行/列,因为没有标题可以粘贴在顶部(如果视口太小,它将正常滚动)。这些列表有一个 ID,用于选择和添加它们或删除顶部元素(这是<li>反向列表中的底部项目)。

这里提供了一个较小的版本:

<link href="https://cdn.jsdelivr.net/npm/bootstrap@5.1.3/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-1BmE4kWBq78iYhFldvKuhfTAU6auU8tT94WrHftjDbrCEXSU1oBoqyl2QvZ6jIW3" crossorigin="anonymous">
<div class="vh-100 w-75 container-fluid">
  <h1>2nd Level Scrolling Example</h1>
  <div class="h-75 row align-items-end">
    <div class="mh-100 col d-flex flex-column">
      <div class="row align-items-end">
        <div class="col"><h3>Normal scroll list, grow on top</h3></div>
      </div>
      <div class="row align-items-end overflow-auto">
        <div class="mh-100 col">
          <ul class="list-group">
            <li>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin ut</li>
            <li>tortor eu ex tincidunt pretium non eu nisl. Ut eu libero ac velit</li>
            <li>ultricies dapibus. Donec id augue scelerisque, gravida est ut,</li>
            <li>commodo sapien. Interdum et malesuada fames ac ante ipsum primis</li>
            <li>in faucibus. Suspendisse volutpat fermentum finibus. Cras egestas</li>
            <li>tempor tempor. Suspendisse potenti. Mauris ac tellus ultrices lectus</li>
            <li>accumsan pellentesque. Nullam semper, nisi nec euismod ultrices, leo</li>
            <li>sem bibendum sapien, in rutrum sapien massa id mi.</li>
          </ul>
        </div>
      </div>
    </div>
    <div class="mh-100 col d-flex flex-column">
      <div class="row align-items-end">
        <div class="col"><h3>Reverse scroll list, grow on bottom</h3></div>
      </div>
      <div class="row align-items-end d-flex flex-column-reverse overflow-auto">
        <div class="mh-100 col">
          <ul class="list-group">
            <li>sem bibendum sapien, in rutrum sapien massa id mi.</li>
            <li>accumsan pellentesque. Nullam semper, nisi nec euismod ultrices, leo</li>
            <li>tempor tempor. Suspendisse potenti. Mauris ac tellus ultrices lectus</li>
            <li>in faucibus. Suspendisse volutpat fermentum finibus. Cras egestas</li>
            <li>commodo sapien. Interdum et malesuada fames ac ante ipsum primis</li>
            <li>ultricies dapibus. Donec id augue scelerisque, gravida est ut,</li>
            <li>tortor eu ex tincidunt pretium non eu nisl. Ut eu libero ac velit</li>
            <li>Lorem ipsum dolor sit amet, consectetur adipiscing elit. Proin ut</li>
          </ul>
        </div>
      </div>
    </div>
  </div>
</div>

如果您的视口高度小于整体内容,则标题应位于列表顶部,页面底部的所有内容(实际上是视口高度的 75%,但在本例中,标题不占用空间它是为)而设计的。

注意:我并不是真正的网络开发人员,只是为日常工作编写一些方便的基于 html 的工具,因此非常欢迎发表评论。

于 2022-01-10T17:05:12.683 回答