I have this input
element:
<input type="text" class="textfield" value="" id="subject" name="subject">
Then I have some other elements, like other text inputs, textareas, etc.
When the user clicks on that input
with #subject
, the page should scroll to the last element of the page with a nice animation. It should be a scroll to bottom and not to top.
The last item of the page is a submit
button with #submit
:
<input type="submit" class="submit" id="submit" name="submit" value="Ok, Done.">
The animation should not be too fast and should be fluid.
I am running the latest jQuery version. I prefer to not install any plugin but to use the default jQuery features to achieve this.
This question is related to
javascript
jquery
scroll
I set up a module scroll-element npm install scroll-element
. It works like this:
import { scrollToElement, scrollWindowToElement } from 'scroll-element'
/* scroll the window to your target element, duration and offset optional */
let targetElement = document.getElementById('my-item')
scrollWindowToElement(targetElement)
/* scroll the overflow container element to your target element, duration and offset optional */
let containerElement = document.getElementById('my-container')
let targetElement = document.getElementById('my-item')
scrollToElement(containerElement, targetElement)
Written with help from the following SO posts:
Here is the code:
export const scrollToElement = function(containerElement, targetElement, duration, offset) {
if (duration == null) { duration = 1000 }
if (offset == null) { offset = 0 }
let targetOffsetTop = getElementOffset(targetElement).top
let containerOffsetTop = getElementOffset(containerElement).top
let scrollTarget = targetOffsetTop + ( containerElement.scrollTop - containerOffsetTop)
scrollTarget += offset
scroll(containerElement, scrollTarget, duration)
}
export const scrollWindowToElement = function(targetElement, duration, offset) {
if (duration == null) { duration = 1000 }
if (offset == null) { offset = 0 }
let scrollTarget = getElementOffset(targetElement).top
scrollTarget += offset
scrollWindow(scrollTarget, duration)
}
function scroll(containerElement, scrollTarget, duration) {
let scrollStep = scrollTarget / (duration / 15)
let interval = setInterval(() => {
if ( containerElement.scrollTop < scrollTarget ) {
containerElement.scrollTop += scrollStep
} else {
clearInterval(interval)
}
},15)
}
function scrollWindow(scrollTarget, duration) {
let scrollStep = scrollTarget / (duration / 15)
let interval = setInterval(() => {
if ( window.scrollY < scrollTarget ) {
window.scrollBy( 0, scrollStep )
} else {
clearInterval(interval)
}
},15)
}
function getElementOffset(element) {
let de = document.documentElement
let box = element.getBoundingClientRect()
let top = box.top + window.pageYOffset - de.clientTop
let left = box.left + window.pageXOffset - de.clientLeft
return { top: top, left: left }
}
This is Atharva's answer from: https://developer.mozilla.org/en-US/docs/Web/API/element.scrollIntoView. Just wanted to add if your document is in an iframe, you can choose an element in the parent frame to scroll into view:
$('#element-in-parent-frame', window.parent.document).get(0).scrollIntoView();
This worked for me:
var targetOffset = $('#elementToScrollTo').offset().top;
$('#DivParent').animate({scrollTop: targetOffset}, 2500);
jQuery(document).ready(function($) {_x000D_
$('a[href^="#"]').bind('click.smoothscroll',function (e) {_x000D_
e.preventDefault();_x000D_
var target = this.hash,_x000D_
$target = $(target);_x000D_
_x000D_
$('html, body').stop().animate( {_x000D_
'scrollTop': $target.offset().top-40_x000D_
}, 900, 'swing', function () {_x000D_
window.location.hash = target;_x000D_
} );_x000D_
} );_x000D_
} );
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
_x000D_
_x000D_
<ul role="tablist">_x000D_
<li class="active" id="p1"><a href="#pane1" role="tab">Section 1</a></li>_x000D_
<li id="p2"><a href="#pane2" role="tab">Section 2</a></li>_x000D_
<li id="p3"><a href="#pane3" role="tab">Section 3</a></li>_x000D_
</ul>_x000D_
_x000D_
<div id="pane1"></div>_x000D_
<div id="pane2"></div>_x000D_
<div id="pane3"></div>
_x000D_
jQuery .scrollTo(): View - Demo, API, Source
I wrote this lightweight plugin to make page/element scrolling much easier. It's flexible where you could pass in a target element or specified value. Perhaps this could be part of jQuery's next official release, what do you think?
Examples Usage:
$('body').scrollTo('#target'); // Scroll screen to target element
$('body').scrollTo(500); // Scroll screen 500 pixels down
$('#scrollable').scrollTo(100); // Scroll individual element 100 pixels down
Options:
scrollTarget: A element, string, or number which indicates desired scroll position.
offsetTop: A number that defines additional spacing above scroll target.
duration: A string or number determining how long the animation will run.
easing: A string indicating which easing function to use for the transition.
complete: A function to call once the animation is complete.
jQuery(document).ready(function($) {_x000D_
$('a[href^="#"]').bind('click.smoothscroll',function (e) {_x000D_
e.preventDefault();_x000D_
var target = this.hash,_x000D_
$target = $(target);_x000D_
_x000D_
$('html, body').stop().animate( {_x000D_
'scrollTop': $target.offset().top-40_x000D_
}, 900, 'swing', function () {_x000D_
window.location.hash = target;_x000D_
} );_x000D_
} );_x000D_
} );
_x000D_
<script src="https://ajax.googleapis.com/ajax/libs/jquery/2.1.1/jquery.min.js"></script>_x000D_
_x000D_
_x000D_
<ul role="tablist">_x000D_
<li class="active" id="p1"><a href="#pane1" role="tab">Section 1</a></li>_x000D_
<li id="p2"><a href="#pane2" role="tab">Section 2</a></li>_x000D_
<li id="p3"><a href="#pane3" role="tab">Section 3</a></li>_x000D_
</ul>_x000D_
_x000D_
<div id="pane1"></div>_x000D_
<div id="pane2"></div>_x000D_
<div id="pane3"></div>
_x000D_
I wrote a general purpose function that scrolls to either a jQuery object, a CSS selector, or a numeric value.
Example usage:
// scroll to "#target-element":
$.scrollTo("#target-element");
// scroll to 80 pixels above first element with class ".invalid":
$.scrollTo(".invalid", -80);
// scroll a container with id "#my-container" to 300 pixels from its top:
$.scrollTo(300, 0, "slow", "#my-container");
The function's code:
/**
* Scrolls the container to the target position minus the offset
*
* @param target - the destination to scroll to, can be a jQuery object
* jQuery selector, or numeric position
* @param offset - the offset in pixels from the target position, e.g.
* pass -80 to scroll to 80 pixels above the target
* @param speed - the scroll speed in milliseconds, or one of the
* strings "fast" or "slow". default: 500
* @param container - a jQuery object or selector for the container to
* be scrolled. default: "html, body"
*/
jQuery.scrollTo = function (target, offset, speed, container) {
if (isNaN(target)) {
if (!(target instanceof jQuery))
target = $(target);
target = parseInt(target.offset().top);
}
container = container || "html, body";
if (!(container instanceof jQuery))
container = $(container);
speed = speed || 500;
offset = offset || 0;
container.animate({
scrollTop: target + offset
}, speed);
};
If you are only handling scrolling to an input element, you can use focus()
. For example, if you wanted to scroll to the first visible input:
$(':input:visible').first().focus();
Or the first visible input in an container with class .error
:
$('.error :input:visible').first().focus();
Thanks to Tricia Ball for pointing this out!
When the user clicks on that input with #subject, the page should scroll to the last element of the page with a nice animation. It should be a scroll to bottom and not to top.
The last item of the page is a submit button with #submit
$('#subject').click(function()
{
$('#submit').focus();
$('#subject').focus();
});
This will first scroll down to #submit
then restore the cursor back to the input that was clicked, which mimics a scroll down, and works on most browsers. It also doesn't require jQuery as it can be written in pure JavaScript.
Can this fashion of using focus
function mimic animation in a better way, through chaining focus
calls. I haven't tested this theory, but it would look something like this:
<style>
#F > *
{
width: 100%;
}
</style>
<form id="F" >
<div id="child_1"> .. </div>
<div id="child_2"> .. </div>
..
<div id="child_K"> .. </div>
</form>
<script>
$('#child_N').click(function()
{
$('#child_N').focus();
$('#child_N+1').focus();
..
$('#child_K').focus();
$('#child_N').focus();
});
</script>
To show the full element (if it's possible with the current window size):
var element = $("#some_element");
var elementHeight = element.height();
var windowHeight = $(window).height();
var offset = Math.min(elementHeight, windowHeight) + element.offset().top;
$('html, body').animate({ scrollTop: offset }, 500);
$('html, body').animate(...)
does not for me on iphone, android chrome safari browser.
I had to target root content element of the page.
$('#cotnent').animate(...)
Here is what I have ended up with
if (navigator.userAgent.match(/(iPod|iPhone|iPad|Android)/)) {
$('#content').animate({
scrollTop: $("#elementtoScrollToID").offset().top
}, 'slow');
}
else{
$('html, body').animate({
scrollTop: $("#elementtoScrollToID").offset().top
}, 'slow');
}
All body content wired up with a #content div
<html>
....
<body>
<div id="content">
....
</div>
</body>
</html>
Using this simple script
if($(window.location.hash).length > 0){
$('html, body').animate({ scrollTop: $(window.location.hash).offset().top}, 1000);
}
Would make in sort that if a hash tag is found in the url, the scrollTo animate to the ID. If not hash tag found, then ignore the script.
$('html, body').animate({scrollTop:
Math.min(
$(to).offset().top-margintop, //margintop is the margin above the target
$('body')[0].scrollHeight-$('body').height()) //if the target is at the bottom
}, 2000);
var scrollTo = function($parent, $element) {
var topDiff = $element.position().top - $parent.position().top;
$parent.animate({
scrollTop : topDiff
}, 100);
};
If you want to scroll within an overflow container (instead of $('html, body')
answered above), working also with absolute positioning, this is the way to do :
var elem = $('#myElement'),
container = $('#myScrollableContainer'),
pos = elem.position().top + container.scrollTop() - container.position().top;
container.animate({
scrollTop: pos
}
For what it's worth, this is how I managed to achieve such behavior for a general element which can be inside a DIV with scrolling. In our case we don't scroll the full body, but just particular elements with overflow: auto; within a larger layout.
It creates a fake input of the height of the target element, and then puts a focus to it, and the browser will take care about the rest no matter how deep within the scrollable hierarchy you are. Works like a charm.
var $scrollTo = $('#someId'),
inputElem = $('<input type="text"></input>');
$scrollTo.prepend(inputElem);
inputElem.css({
position: 'absolute',
width: '1px',
height: $scrollTo.height()
});
inputElem.focus();
inputElem.remove();
A compact version of "animate" solution.
$.fn.scrollTo = function (speed) {
if (typeof(speed) === 'undefined')
speed = 1000;
$('html, body').animate({
scrollTop: parseInt($(this).offset().top)
}, speed);
};
Basic usage: $('#your_element').scrollTo();
This is the way I do it.
document.querySelector('scrollHere').scrollIntoView({ behavior: 'smooth' })
Works in any browser.
It can easily be wrapped into a function
function scrollTo(selector) {
document.querySelector(selector).scrollIntoView({ behavior: 'smooth' })
}
Here is a working example
$(".btn").click(function() {_x000D_
document.getElementById("scrollHere").scrollIntoView( {behavior: "smooth" })_x000D_
})
_x000D_
.btn {margin-bottom: 500px;}_x000D_
.middle {display: block; margin-bottom: 500px; color: red;}
_x000D_
<script src="https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.min.js"></script>_x000D_
_x000D_
<button class="btn">Scroll down</button>_x000D_
_x000D_
<h1 class="middle">You see?</h1>_x000D_
_x000D_
<div id="scrollHere">Arrived at your destination</div>
_x000D_
Very simple and easy to use custom jQuery plugin. Just add the attribute scroll=
to your clickable element and set its value to the selector you want to scroll to.
Like so: <a scroll="#product">Click me</a>
. It can be used on any element.
(function($){
$.fn.animateScroll = function(){
console.log($('[scroll]'));
$('[scroll]').click(function(){
selector = $($(this).attr('scroll'));
console.log(selector);
console.log(selector.offset().top);
$('html body').animate(
{scrollTop: (selector.offset().top)}, //- $(window).scrollTop()
1000
);
});
}
})(jQuery);
// RUN
jQuery(document).ready(function($) {
$().animateScroll();
});
// IN HTML EXAMPLE
// RUN ONCLICK ON OBJECT WITH ATTRIBUTE SCROLL=".SELECTOR"
// <a scroll="#product">Click To Scroll</a>
The solution by Steve and Peter works very well.
But in some cases, you may have to convert the value to an integer. Strangely, the returned value from $("...").offset().top
is sometimes in float
.
Use: parseInt($("....").offset().top)
For example:
$("#button").click(function() {
$('html, body').animate({
scrollTop: parseInt($("#elementtoScrollToID").offset().top)
}, 2000);
});
This is my approach abstracting the ID's and href's, using a generic class selector
$(function() {_x000D_
// Generic selector to be used anywhere_x000D_
$(".js-scroll-to").click(function(e) {_x000D_
_x000D_
// Get the href dynamically_x000D_
var destination = $(this).attr('href');_x000D_
_x000D_
// Prevent href=“#” link from changing the URL hash (optional)_x000D_
e.preventDefault();_x000D_
_x000D_
// Animate scroll to destination_x000D_
$('html, body').animate({_x000D_
scrollTop: $(destination).offset().top_x000D_
}, 500);_x000D_
});_x000D_
});
_x000D_
<!-- example of a fixed nav menu -->_x000D_
<ul class="nav">_x000D_
<li>_x000D_
<a href="#section-1" class="nav-item js-scroll-to">Item 1</a>_x000D_
</li>_x000D_
<li>_x000D_
<a href="#section-2" class="nav-item js-scroll-to">Item 2</a>_x000D_
</li>_x000D_
<li>_x000D_
<a href="#section-3" class="nav-item js-scroll-to">Item 3</a>_x000D_
</li>_x000D_
</ul>
_x000D_
In most cases, it would be best to use a plugin. Seriously. I'm going to tout mine here. Of course there are others, too. But please check if they really avoid the pitfalls for which you'd want a plugin in the first place - not all of them do.
I have written about the reasons for using a plugin elsewhere. In a nutshell, the one liner underpinning most answers here
$('html, body').animate( { scrollTop: $target.offset().top }, duration );
is bad UX.
The animation doesn't respond to user actions. It carries on even if the user clicks, taps, or tries to scroll.
If the starting point of the animation is close to the target element, the animation is painfully slow.
If the target element is placed near the bottom of the page, it can't be scrolled to the top of the window. The scroll animation stops abruptly then, in mid motion.
To handle these issues (and a bunch of others), you can use a plugin of mine, jQuery.scrollable. The call then becomes
$( window ).scrollTo( targetPosition );
and that's it. Of course, there are more options.
With regard to the target position, $target.offset().top
does the job in most cases. But please be aware that the returned value doesn't take a border on the html
element into account (see this demo). If you need the target position to be accurate under any circumstances, it is better to use
targetPosition = $( window ).scrollTop() + $target[0].getBoundingClientRect().top;
That works even if a border on the html
element is set.
ONELINER
subject.onclick = e=> window.scroll({ top: submit.offsetTop, behavior: 'smooth'});
subject.onclick = e=> window.scroll({top: submit.offsetTop, behavior: 'smooth'});
_x000D_
.box,.foot{display: flex;background:#fdf;padding:500px 0} .foot{padding:250px}
_x000D_
<input type="text" class="textfield" value="click here" id="subject" name="subject">_x000D_
_x000D_
<div class="box">_x000D_
Some content_x000D_
<textarea></textarea>_x000D_
</div>_x000D_
_x000D_
<input type="submit" class="submit" id="submit" name="submit" value="Ok, Done.">_x000D_
_x000D_
<div class="foot">Some footer</div>
_x000D_
Animations:
// slide to top of the page
$('.up').click(function () {
$("html, body").animate({
scrollTop: 0
}, 600);
return false;
});
// slide page to anchor
$('.menutop b').click(function(){
//event.preventDefault();
$('html, body').animate({
scrollTop: $( $(this).attr('href') ).offset().top
}, 600);
return false;
});
// Scroll to class, div
$("#button").click(function() {
$('html, body').animate({
scrollTop: $("#target-element").offset().top
}, 1000);
});
// div background animate
$(window).scroll(function () {
var x = $(this).scrollTop();
// freezze div background
$('.banner0').css('background-position', '0px ' + x +'px');
// from left to right
$('.banner0').css('background-position', x+'px ' +'0px');
// from right to left
$('.banner0').css('background-position', -x+'px ' +'0px');
// from bottom to top
$('#skills').css('background-position', '0px ' + -x + 'px');
// move background from top to bottom
$('.skills1').css('background-position', '0% ' + parseInt(-x / 1) + 'px' + ', 0% ' + parseInt(-x / 1) + 'px, center top');
// Show hide mtop menu
if ( x > 100 ) {
$( ".menu" ).addClass( 'menushow' );
$( ".menu" ).fadeIn("slow");
$( ".menu" ).animate({opacity: 0.75}, 500);
} else {
$( ".menu" ).removeClass( 'menushow' );
$( ".menu" ).animate({opacity: 1}, 500);
}
});
// progres bar animation simple
$('.bar1').each(function(i) {
var width = $(this).data('width');
$(this).animate({'width' : width + '%' }, 900, function(){
// Animation complete
});
});
After finding the way to get my code work, I think I should make thing a bit clear: For using:
$('html, body').animate({
scrollTop: $("#div1").offset().top
}, 2000);
you need to be on top of the page since $("#div1").offset().top
will return different numbers for different positions you scroll to. If you already scrolled out of the top, you need to specify the exact pageY
value (see pageY
definition here: https://javascript.info/coordinates).
So now, the problem is to calculate the pageY
value of one element. Below is an example in case the scroll container is the body:
function getPageY(id) {
let elem = document.getElementById(id);
let box = elem.getBoundingClientRect();
var body = document.getElementsByTagName("BODY")[0];
return box.top + body.scrollTop; // for window scroll: box.top + window.scrollY;
}
The above function returns the same number even if you scrolled somewhere. Now, to scroll back to that element:
$("html, body").animate({ scrollTop: getPageY('div1') }, "slow");
Easy way to achieve the scroll of page to target div id
var targetOffset = $('#divID').offset().top;
$('html, body').animate({scrollTop: targetOffset}, 1000);
You just need:
$("selector").get(0).scrollTo(0, 0)
Updated answer as of 2019:
$('body').animate({
scrollTop: $('#subject').offset().top - $('body').offset().top + $('body').scrollTop()
}, 'fast');
I know a way without jQuery:
document.getElementById("element-id").scrollIntoView();
Edit: It's been two years and I'm still randomly getting reputation from this post lmao
Edit 2: Please don't edit my comment without asking me.
If you are not much interested in the smooth scroll effect and just interested in scrolling to a particular element, you don't require some jQuery function for this. Javascript has got your case covered:
https://developer.mozilla.org/en-US/docs/Web/API/element.scrollIntoView
So all you need to do is: $("selector").get(0).scrollIntoView();
.get(0)
is used because we want to retrieve the JavaScript's DOM element and not the JQuery's DOM element.
With this solution you do not need any plugin and there's no setup required besides placing the script before your closing </body>
tag.
$("a[href^='#']").on("click", function(e) {
$("html, body").animate({
scrollTop: $($(this).attr("href")).offset().top
}, 1000);
return false;
});
if ($(window.location.hash).length > 1) {
$("html, body").animate({
scrollTop: $(window.location.hash).offset().top
}, 1000);
}
On load, if there is a hash in the address, we scroll to it.
And - whenever you click an a
link with an href
hash e.g. #top
, we scroll to it.
##Edit 2020
If you want a pure JavaScript solution: you could perhaps instead use something like:
var _scrollToElement = function (selector) {
try {
document.querySelector(selector).scrollIntoView({ behavior: 'smooth' });
} catch (e) {
console.warn(e);
}
}
var _scrollToHashesInHrefs = function () {
document.querySelectorAll("a[href^='#']").forEach(function (el) {
el.addEventListener('click', function (e) {
_scrollToElement(el.getAttribute('href'));
return false;
})
})
if (window.location.hash) {
_scrollToElement(window.location.hash);
}
}
_scrollToHashesInHrefs();
Source: Stackoverflow.com