ChatGPT解决这个技术问题 Extra ChatGPT

Scroll Automatically to the Bottom of the Page

I have a list of questions. When I click on the first question, it should automatically take me to a specific element at the bottom of the page.

How can I do this with jQuery?


6
6 revs, 5 users 71%

jQuery isn't necessary. Most of the top results I got from a Google search gave me this answer:

window.scrollTo(0, document.body.scrollHeight);

Where you have nested elements, the document might not scroll. In this case, you need to target the element that scrolls and use it's scroll height instead.

window.scrollTo(0, document.querySelector(".scrollingContainer").scrollHeight);

You can tie that to the onclick event of your question (i.e. <div onclick="ScrollToBottom()" ...).

Some additional sources you can take a look at:

http://www.sourcetricks.com/2010/07/javascript-scroll-to-bottom-of-page.html

http://www.alecjacobson.com/weblog/?p=753

http://www.mediacollege.com/internet/javascript/page/scroll.html

http://www.electrictoolbox.com/jquery-scroll-bottom/


Didn't work for me. I did this: element.scrollTop = element.scrollHeight.
May 4, 2016: Please note that that the "scrollTo" function is experimental and does not work in all browsers.
scrollto did not work on my browser, I came across this link below stackoverflow.com/questions/8917921/… which is very useful because the solutions work across the browsers I tried.
for a separate element, this is working solution: document.querySelector(".scrollingContainer").scrollTo(0,document.querySelector(".scrollingContainer").scrollHeight);
This should work too: objectSelector.scrollTo({ top: objectSelector.scrollHeight }). Understanding that objectSelector is the element returned by document.getElementById. PD: adding behavior: 'smooth' in the scrollTo method options set up a predefined scrolling animation.
T
Tho

To scroll entire page to the bottom:

const scrollingElement = (document.scrollingElement || document.body);
scrollingElement.scrollTop = scrollingElement.scrollHeight;

You can view the demo here

To scroll a specific element to the bottom:

const scrollToBottom = (id) => {
    const element = document.getElementById(id);
    element.scrollTop = element.scrollHeight;
}

Here is the demo

And here's how it works:

https://i.stack.imgur.com/iVYvW.png

Ref: scrollTop, scrollHeight, clientHeight

UPDATE: Latest versions of Chrome (61+) and Firefox does not support scrolling of body, see: https://dev.opera.com/articles/fixing-the-scrolltop-bug/


The solution works with Chrome, Firefox, Safari and IE8+. Check out this link for more detail quirksmode.org/dom/w3c_cssom.html
@luochenhuan, I've just fixed the sample code by using "document.scrollingElement" instead of "document.body", see above
s
shmuli

Vanilla JS implementation:

element.scrollIntoView(false);

https://developer.mozilla.org/en-US/docs/Web/API/element.scrollIntoView


with jQuery $('#id')[0].scrollIntoView(false);
at the moment it's Firefox only though
Works in newer versions of Chrome now, but some of the extra options (like smooth scrolling) don't seem to be implemented yet.
I added an empty div at the end of the page and used the id of that div. Worked perfectly.
Even better: element.scrollIntoView({behavior: "smooth"});
u
user5978325

You can use this to go down the page in an animation format.

$('html,body').animate({scrollTop: document.body.scrollHeight},"fast");

P
PixelsTech

Below should be the cross browser solution. It has been tested on Chrome, Firefox, Safari and IE11

window.scrollTo(0, document.body.scrollHeight || document.documentElement.scrollHeight);

window.scrollTo(0,document.body.scrollHeight); doesn't work on Firefox, at least for Firefox 37.0.2


It does work in Firefox 62.0.3, but I've got no clue when they fixed that.
window.scrollTo(0, document.body.scrollHeight || document.documentElement.scrollHeight); - The scroll is not smooth. How will make the scrolling smooth @PixelsTech
You can add options to scrolling
T
TLJ

one liner to smooth scroll to the bottom

window.scrollTo({ left: 0, top: document.body.scrollHeight, behavior: "smooth" });

To scroll up simply set top to 0


This solution doesn't work in IE. Is there any workout that we can add to make this work in IE as well.
K
Konard

Sometimes the page extends on scroll to buttom (for example in social networks), to scroll down to the end (ultimate buttom of the page) I use this script:

var scrollInterval = setInterval(function() { 
    document.documentElement.scrollTop = document.documentElement.scrollHeight;
}, 50);

And if you are in browser's javascript console, it might be useful to be able to stop the scrolling, so add:

var stopScroll = function() { clearInterval(scrollInterval); };

And then use stopScroll();.

If you need to scroll to particular element, use:

var element = document.querySelector(".element-selector");
element.scrollIntoView();

Or universal script for autoscrolling to specific element (or stop page scrolling interval):

var notChangedStepsCount = 0;
var scrollInterval = setInterval(function() {
    var element = document.querySelector(".element-selector");
    if (element) { 
        // element found
        clearInterval(scrollInterval);
        element.scrollIntoView();
    } else if((document.documentElement.scrollTop + window.innerHeight) != document.documentElement.scrollHeight) { 
        // no element -> scrolling
        notChangedStepsCount = 0;
        document.documentElement.scrollTop = document.documentElement.scrollHeight;
    } else if (notChangedStepsCount > 20) { 
        // no more space to scroll
        clearInterval(scrollInterval);
    } else {
        // waiting for possible extension (autoload) of the page
        notChangedStepsCount++;
    }
}, 50);

let size = ($("div[class*='card-inserted']")).length; ($("div[class*='card-inserted']"))[size -1].scrollIntoView();
@nobjta_9x_tq this will work only if the page is loaded up to the end.
E
Em Seven

You can use this function wherever you need to call it:

function scroll_to(div){
   if (div.scrollTop < div.scrollHeight - div.clientHeight)
        div.scrollTop += 10; // move down

}

jquery.com: ScrollTo


For me, document.getElementById('copyright').scrollTop += 10 doesn't work (in latest Chrome)... remains zero...
a
ashleedawg

CSS-Only?!

An interesting CSS-only alternative:

display: flex; 
flex-direction: column-reverse;

  /* ...probably usually along with: */

overflow-y: scroll;  /* or hidden or auto */
height: 100px; /* or whatever */

It's not bullet-proof but I've found it helpful in several situations.

Documentation: flex, flex-direction, overflow-y

Demo:

var i=0, foo='Lorem Ipsum & foo in bar or blah ! on and'.split(' '); setInterval(function(){demo.innerHTML+=foo[i++%foo.length]+' '},200) #demo{ display:flex; flex-direction:column-reverse; overflow-y:scroll; width:150px; height:150px; border:3px solid black; } body{ font-family:arial,sans-serif; font-size:15px; } Autoscrolling demo:🐾


Be aware that this will create a disconnect between the visual presentation and DOM order when using multiple elements – like paragraphs – to display the text, which will negatively affect users using screen readers. This type of user will not have access to the correct reading order.
R
Ricardo Vieira

you can do this too with animation, its very simple

$('html, body').animate({
   scrollTop: $('footer').offset().top
   //scrollTop: $('#your-id').offset().top
   //scrollTop: $('.your-class').offset().top
}, 'slow');

hope helps, thank you


A
Andrew

So many answers trying to calculate the height of the document. But it wasn't calculating correctly for me. However, both of these worked:

jquery

    $('html,body').animate({scrollTop: 9999});

or just js

    window.scrollTo(0,9999);

LOL "worked". What if the document is longer than 9999?
@DanDascalescu 99999
What if the document is longer than 99999?!
@BrendonMuir If the document is longer than 99999 you can define a javascript variable above the javascript code in the answer that gets the dynamic height of the document and use that variable instead of the hard coded 99999
Sorry @nviens, I was just being silly, following on from DanDascalescu :D
L
Liam

A simple way if you want to scroll down to a specific element.

Call this function whenever you want to scroll down.

function scrollDown() { document.getElementById('scroll').scrollTop = document.getElementById('scroll').scrollHeight } ul{ height: 100px; width: 200px; overflow-y: scroll; border: 1px solid #000; }

  • Top Here
  • Something Here
  • Something Here
  • Something Here
  • Something Here
  • Something Here
  • Something Here
  • Something Here
  • Something Here
  • Something Here
  • Bottom Here
  • Bottom Here


This is not simple, and requires creating a scroll element.
@DanDascalescu You're right! but my code works I don't think it deserves down vote
"Works" is not enough. All solutions on this page "work" to some extent. And there's a ton of them. How should a reader decide?
O
ObjectJosh

Here is a method that worked for me:

Expected outcome:

No scroll animation

Loads at bottom of page on first load

Loads on bottom of page for all refreshes

Code:

<script>
    function scrollToBottom() {
        window.scrollTo(0, document.body.scrollHeight);
    }
    history.scrollRestoration = "manual";
    window.onload = scrollToBottom;
</script>

Why this may work over other methods:

Browsers such as Chrome have a built-in preset to remember where you were on the page, after refreshing. Just a window.onload doesn't work because your browser will automatically scroll you back to where you were before refreshing, AFTER you call a line such as:

window.scrollTo(0, document.body.scrollHeight);

That's why we need to add:

history.scrollRestoration = "manual";

before the window.onload to disable that built-in feature first.

References:

Documentation for window.onload: https://developer.mozilla.org/en-US/docs/Web/API/GlobalEventHandlers/onload

Documentation for window.scrollTo: https://developer.mozilla.org/en-US/docs/Web/API/Window/scrollTo

Documentation for history.scrollRestoration: https://developer.mozilla.org/en-US/docs/Web/API/History/scrollRestoration


Thank you - This was the answer that worked for me after searching for days.
R
RegarBoy

You can attach any id to reference attribute href of link element:

<a href="#myLink" id="myLink">
    Click me
</a>

In the example above when user clicks Click me at the bottom of page, navigation navigates to Click me itself.


This did not for for me because it changes url and then my angular app redirects to something else!
A
Ahsan Khurshid

You may try Gentle Anchors a nice javascript plugin.

Example:

function SomeFunction() {
  // your code
  // Pass an id attribute to scroll to. The # is required
  Gentle_Anchors.Setup('#destination');
  // maybe some more code
}

Compatibility Tested on:

Mac Firefox, Safari, Opera

Windows Firefox, Opera, Safari, Internet Explorer 5.55+

Linux untested but should be fine with Firefox at least


S
ShortFuse

Late to the party, but here's some simple javascript-only code to scroll any element to the bottom:

function scrollToBottom(e) {
  e.scrollTop = e.scrollHeight - e.getBoundingClientRect().height;
}

X
Xpleria

For Scroll down in Selenium use below code:

Till the bottom drop down, scroll till the height of the page. Use the below javascript code that would work fine in both, JavaScript and React.

JavascriptExecutor jse = (JavascriptExecutor) driver; // (driver is your browser webdriver object) 
jse.executeScript("window.scrollBy(0,document.body.scrollHeight || document.documentElement.scrollHeight)", "");

I
Iamma Iamma

Here's my solution:

 //**** scroll to bottom if at bottom

 function scrollbottom() {
    if (typeof(scr1)!='undefined') clearTimeout(scr1)   
    var scrollTop = (document.documentElement && document.documentElement.scrollTop) || document.body.scrollTop;
    var scrollHeight = (document.documentElement && document.documentElement.scrollHeight) || document.body.scrollHeight;
    if((scrollTop + window.innerHeight) >= scrollHeight-50) window.scrollTo(0,scrollHeight+50)
    scr1=setTimeout(function(){scrollbottom()},200) 
 }
 scr1=setTimeout(function(){scrollbottom()},200)

What... is even going on there? Care you explain your solution? Code-only answers are discouraged.
C
Ciarán Bruen

I have an Angular app with dynamic content and I tried several of the above answers with not much success. I adapted @Konard's answer and got it working in plain JS for my scenario:

HTML

<div id="app">
    <button onClick="scrollToBottom()">Scroll to Bottom</button>
    <div class="row">
        <div class="col-md-4">
            <br>
            <h4>Details for Customer 1</h4>
            <hr>
            <!-- sequence Id -->
            <div class="form-group">
                <input type="text" class="form-control" placeholder="ID">
            </div>
            <!-- name -->
            <div class="form-group">
                <input type="text" class="form-control" placeholder="Name">
            </div>
            <!-- description -->
            <div class="form-group">
                <textarea type="text" style="min-height: 100px" placeholder="Description" ></textarea>
            </div>
            <!-- address -->
            <div class="form-group">
                <input type="text" class="form-control" placeholder="Address">
            </div>
            <!-- postcode -->
            <div class="form-group">
                <input type="text" class="form-control" placeholder="Postcode">
            </div>
            <!-- Image -->
            <div class="form-group">
                <img style="width: 100%; height: 300px;">
                <div class="custom-file mt-3">
                    <label class="custom-file-label">{{'Choose file...'}}</label>
                </div>
            </div>
            <!-- Delete button -->
            <div class="form-group">
                <hr>
                <div class="row">
                    <div class="col">
                        <button class="btn btn-success btn-block" data-toggle="tooltip" data-placement="bottom" title="Click to save">Save</button>
                        <button class="btn btn-success btn-block" data-toggle="tooltip" data-placement="bottom" title="Click to update">Update</button>
                    </div>
                    <div class="col">
                        <button class="btn btn-danger btn-block" data-toggle="tooltip" data-placement="bottom" title="Click to remove">Remove</button>
                    </div>
                </div>
                <hr>
            </div>
        </div>
    </div>
</div>

CSS

body {
    background: #20262E;
    padding: 20px;
    font-family: Helvetica;
}

#app {
    background: #fff;
    border-radius: 4px;
    padding: 20px;
    transition: all 0.2s;
}

JS

function scrollToBottom() {
    scrollInterval;
    stopScroll;

    var scrollInterval = setInterval(function () {
        document.documentElement.scrollTop = document.documentElement.scrollHeight;
    }, 50);

    var stopScroll = setInterval(function () {
        clearInterval(scrollInterval);
    }, 100);
}

Tested on the latest Chrome, FF, Edge, and stock Android browser. Here's a fiddle:

https://jsfiddle.net/cbruen1/18cta9gd/16/


J
Julien

I found a trick to make it happen.

Put an input type text at the bottom of the page and call a jquery focus on it whenever you need to go at the bottom.

Make it readonly and nice css to clear border and background.


A
Akitha_MJ

If any one searching for Angular

you just need to scroll down add this to your div

 #scrollMe [scrollTop]="scrollMe.scrollHeight"

   <div class="my-list" #scrollMe [scrollTop]="scrollMe.scrollHeight">
   </div>

S
SeekLoad

This will guaranteed scroll to the bottom

Head Codes

<script src="http://code.jquery.com/jquery-1.8.1.min.js"></script>
<script language="javascript" type="text/javascript">
function scrollToBottom() {
  $('#html, body').scrollTop($('#html, body')[0].scrollHeight);
}
</script>

Body code

<a href="javascript:void(0);" onmouseover="scrollToBottom();" title="Scroll to Bottom">&#9660; Bottom &#9660;</a>

D
Dharman

I've had the same issue. For me at one point in time the div's elements were not loaded entirely and the scrollTop property was initialized with the current value of scrollHeight, which was not the correct end value of scrollHeight.

My project is in Angular 8 and what I did was:

I used viewchild in order to obtain the element in my .ts file. I've inherited the AfterViewChecked event and placed one line of code in there which states that the viewchild element has to take into the scrollTop value the value of scrollHeight (this.viewChildElement.nativeElement.scrollTop = this.viewChildElement.nativeElement.scrollHeight;)

The AfterViewChecked event fires a few times and it gets in the end the proper value from scrollHeight.


A
Arti

We can use ref and by getElementById for scrolling specific modal or page .

 const scrollToBottomModel = () => {
    const scrollingElement = document.getElementById("post-chat");
    scrollingElement.scrollTop = scrollingElement.scrollHeight;
  };

In the modal body you can call above function

 <Modal.Body
          className="show-grid"
          scrollable={true}
          style={{
            maxHeight: "calc(100vh - 210px)",
            overflowY: "auto",
            height: "590px",
          }}
          ref={input => scrollToBottomModel()}
          id="post-chat"
        >

will work this


J
Joukhar

A simple example with jquery

$('html, body').animate({
    scrollTop:   $(this).height(),
  });

hmm, does not work with huge
's in Google Chrome 100 :/ it just scrolls down to the start of the 
                        				                   		
T
Timar Ivo Batis

window.scrollTo(0,1e10);

always works.

1e10 is a big number. so its always the end of the page.


n
nonopolarity

A picture is worth a thousand words:

The key is:

document.documentElement.scrollTo({
  left: 0,
  top: document.documentElement.scrollHeight - document.documentElement.clientHeight,
  behavior: 'smooth'
});

It is using document.documentElement, which is the <html> element. It is just like using window, but it is just my personal preference to do it this way, because if it is not the whole page but a container, it works just like this except you'd change document.body and document.documentElement to document.querySelector("#container-id").

Example:

let cLines = 0; let timerID = setInterval(function() { let elSomeContent = document.createElement("div"); if (++cLines > 33) { clearInterval(timerID); elSomeContent.innerText = "That's all folks!"; } else { elSomeContent.innerText = new Date().toLocaleDateString("en", { dateStyle: "long", timeStyle: "medium" }); } document.body.appendChild(elSomeContent); document.documentElement.scrollTo({ left: 0, top: document.documentElement.scrollHeight - document.documentElement.clientHeight, behavior: 'smooth' }); }, 1000); body { font: 27px Arial, sans-serif; background: #ffc; color: #333; }

You can compare the difference if there is no scrollTo():

let cLines = 0; let timerID = setInterval(function() { let elSomeContent = document.createElement("div"); if (++cLines > 33) { clearInterval(timerID); elSomeContent.innerText = "That's all folks!"; } else { elSomeContent.innerText = new Date().toLocaleDateString("en", { dateStyle: "long", timeStyle: "medium" }); } document.body.appendChild(elSomeContent); }, 1000); body { font: 27px Arial, sans-serif; background: #ffc; color: #333; }